.banner{
    position: relative;
    width: 100%;
}
.banner img{
    display: block;
    width: 100%;
}
.banner>div{
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto auto;
}
.banner>div p img{
    width: 503px;
    height: 70px;
    margin: 0 auto 44px;
}
.banner>div p:first-child{
    font-size:46px;
    font-weight:400;
    color:rgba(255,255,255,1);
    text-align: center;
    margin-top: 7%;
}
.banner>div div{
    width:720px;
    height:2px;
    background:rgba(255,255,255,1);
    margin: 0 auto;
}
.banner>div p:last-child{
    font-size:24px;
    font-weight:400;
    color:rgba(255,255,255,1);
    text-align: center;
    margin-top: 20px;
}

.center_content ul li{
    position: relative;
    width: 100%;
    height: 310px;
    margin-bottom: 150px;
}
.center_content ul li:nth-child(1){
    margin-top: 107px;
}
.center_content ul li .picture{
    width: 620px;
    height: 310px;
}
.center_content ul li:nth-of-type(odd) .picture {
    position: absolute;
    left: 0;
    top: 0;
}
.center_content ul li:nth-of-type(even) .picture {
    position: absolute;
    right: 0;
    top: 0;
}
.center_content ul li .number{
    width: 74px;
    height: 59px;

}
.center_content ul li:nth-of-type(odd) .number {
    position: absolute;
    left: 674px;
    top: 56px;
}
.center_content ul li:nth-of-type(even) .number {
    position: absolute;
    left: 0;
    top: 56px;
}
.center_content ul li p{
    font-size:42px;
    font-weight:bold;
    color:rgba(34,34,34,1);
    line-height:58px;
    border-bottom: 6px solid rgba(223,206,132,1);
}
.center_content ul li:nth-of-type(odd) p{
    position: absolute;
    left: 674px;
    top: 138px;
}
.center_content ul li:nth-of-type(even) p{
    position: absolute;
    left: 0;
    top: 138px;
}
.center_content ul li p span{
    font-size:24px;
    font-weight:bold;
    color:rgba(34,34,34,1);
    line-height:58px;
}
.bottom{
    width: 80%;
    height: 290px;
    margin: 0 auto 80px;
    background: #f7f8f9;
}
.bottom p:nth-child(1){
    font-size:24px;
    font-weight:600;
    color:rgba(102,102,102,1);
    line-height:15px;
    text-align: center;
    padding-top: 30px;
}
.bottom p:nth-child(2){
    font-size:18px;
    font-weight:400;
    color:rgba(102,102,102,1);
    line-height:42px;
    text-align: center;
    padding-top: 100px;
}
.bottom p:nth-child(3){
    font-size:18px;
    font-weight:400;
    color:rgba(102,102,102,1);
    line-height:42px;
    text-align: center;
}
.bottom p:nth-child(3) span{
    color: #2564DF;
}





.mask{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 9999;
    display: none;
}
.mask .register_box{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    -webkit-transform: translate(-50%,-50%);
    margin: 0 auto;
}