.banner {
    height: 498px;
    background: url("../img/xiaochengxu.jpg") no-repeat bottom;
    background-size: cover;
}

.content {
    margin: 20px 0;
}

.content .title {
    text-align: center;
    font-size: 42px;
    font-weight: bold;
    margin: 0;
}