.banner {
    width: 100%;
    height: 430px;
    margin-bottom: 40px;
}

.banner img {
    width: 100%;

}

.title {
    width: 112px;
    font-size: 28px;
    border-bottom: 3px solid rgb(253, 92, 43);
    margin: 60px auto 40px;
}

.news-item {
    float: left;
    width: 285px;
    margin-right: 20px;
    box-shadow: 0 1px 6px #ddd;
    background: #eee;
}

.news-item img {
    width: 285px;
    height: 175px;
}

.news-item h3 {
    margin: 12px 12px 0;
}

.news-item p {
    line-height: 24px;
    margin: 12px;
}

.news-item1 {
    margin-right: 0;
}

.more {
    width: 90px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    background: rgb(253, 92, 43);
    color: #fff;
    margin: 0 auto 12px;
}
.classroom{
    background: #eee;
    padding: 40px 0;
}
.classroom-lg {
    float: left;
    width: 600px;
    height: 335px;
}

.classroom-lg img {
    width: 100%;
    height: 100%;
}

.classroom-rg {
    float: right;
    width: 600px;
    height: 335px;
}

.classroom-rg a {
    display: block;
    margin-left: 20px;
    line-height: 30px;
    font-size: 16px;
}

.classroom-rg a::before {
    content: ' ';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50px;
    border: 2px solid #ddd;
    margin-right: 10px;
}
.adopt{
    margin-bottom: 20px;
}
.adopt img{
    width: 100%;
    height: 100%;
}
.adopt-lg{
    float: left;
    width: 500px;
    height: 300px;
}
.adopt-rg{
    float: left;
    width: 680px;
    height: 300px;
}
.adopt-rg1{
    background: rgb(116, 63, 214);
    color: #fff;
}
.adopt-t{
    font-size: 20px;
    margin: 10px 20px 20px;
}
.adopt-s{
    color: #999;
    margin-bottom: 20px;
    margin-left: 20px;
}
.adopt p{
    line-height: 24px;
    margin-left: 20px;
    margin-right: 20px;
}
.detail{
    width: 60px;
    height: 30px;
    line-height: 30px;
    margin-left: 600px;
    margin-top: 80px;
    background: rgb(253, 92, 43);
    color: #fff;
    text-align: center;
}
.margin{
    margin-left: 20px;
}
.about{
    background: url(../img/ban4.jpg) no-repeat;
    background-size: 100% 100%;
    color: #fff;
    margin-top: 60px;
    padding-bottom: 20px;
}
.about .title{
    padding-top: 40px;
    margin-top: 0;
}
.about p{
    text-align: center;
    margin-bottom: 20px;
    line-height: 24px;
}

.xl {
    width: 80px;
    height: 40px;
    overflow: hidden;
}
.xl:hover{
    position: relative;
    height: 80px;
    z-index: 1;
}
.banner img{
    position: relative;
    top: -40px;
}