/* 全局样式 */
html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
}

/* 导航栏样式 */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: bold;
}

.nav-item {
    padding: 0 10px;
}

.nav-link {
    position: relative;
    padding: 0.5rem 1rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: #0d6efd;
    transition: all 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
    left: 0;
}

.nav-link.active {
    color: #0d6efd !important;
    font-weight: bold;
}

.nav-link.active::after {
    width: 100%;
    left: 0;
}

/* 首页样式 */
#home {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.4)), url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    color: white;
}

/* 关于我们样式 */
#about .list-unstyled li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

#about .list-unstyled li i {
    color: #0d6efd;
    margin-right: 0.5rem;
}

/* 服务范围样式 */
.card {
    border: none;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

/* 合作客户样式 */
#clients img {
    transition: all 0.3s ease;
    padding: 1rem;
    width: 120px;
    height: auto;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

#clients img:hover {
    transform: scale(1.05);
}

/* 联系我们样式 */
#contact form .form-control {
    border-radius: 0;
    border: none;
    border-bottom: 2px solid #dee2e6;
    padding: 0.75rem 1rem;
}

#contact form .form-control:focus {
    box-shadow: none;
    border-color: #0d6efd;
}

#contact .btn-primary {
    border-radius: 30px;
    padding: 0.75rem 2rem;
}

/* 页脚样式 */
footer {
    background-color: #343a40;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

#contact .container {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar {
        background-color: white !important;
    }
    
    #home {
        text-align: center;
    }
    
    #about img {
        margin-bottom: 2rem;
    }
}

#contact {
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1497215842964-222b430dc094?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: