.container{
    width: 100%;
    /* height: 100%; */
    background:rgba(245,246,248,1);
}
::-webkit-scrollbar{
    display:blcok;
}
.fl{
    float: left;
}
.fr{
    float: right;
}
.wrap{
    width: 1200px;
    height: 80px;
    background: #fff;
    margin:0 auto;
}
.header-ad{
    width: 1200px;
    height: 80px;
    display: flex;
    align-items: center;
    vertical-align: middle;
}
.header-ad .logo-l{
    width: 50%;

}
.header-ad .logo-l img{
    width: 210px;
    height: 50px;
}
.header-ad .logo-r{
    width: 50%;
    line-height: 50px;
    font-size: 24px;
    color: #FFC336;
}
.header-ad .logo-r img{
    width: 30px;
    vertical-align: middle;
    height: 100%;
}
/* nav */
.nav-wrap{
    width: 100%;
    height: 50px;
    background:rgba(0,33,74,1);
    line-height: 50px;
}
.nav-wrap .nav{
    width: 1200px;
    margin	:0 auto;
    cursor: pointer;
}
.nav ul>li{
    display: inline-block;
    width: 13%;
    font-size: 16px;
    text-align: center;
}
.nav ul>li>a{
    display: inline-block;
    width: 100%;
    height: 50px;
    color: #fff;
}
.nav ul>li>a:hover{
    background: #0870EE;
}
.active-nav{
    background: #0870EE;
}
.aa{
    position: relative;
}
.aa:hover .bb{
    display: block;
}
.bb{
    width: 100%;
    position: absolute;
    top: 44px;
    text-align: center;
    z-index: 999;
    display: none;
}
.bb>p>a{
    display: block;
    width: 100%;
    height: 44px;
    text-align: center;
    background: #fff;
    font-size: 14px;
    color: #333;
}
.bb>p>a:hover{
    background:rgba(238,245,255,1);
    color: #0870EE;
}
.bb .bb-active{
    background:rgba(238,245,255,1);
    color: #0870EE;
}
/* header-img */
.header-img-wrap{
    width: 100%;
    height: 350px;
}
.header-img{
    width: 100%;
    height: 100%;
}
.header-img img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
/* cases */
.cases-wrap{
    width: 1200px;
    margin: 0 auto;
}
.cases{
    width: 100%;
    height: 100%;
    margin-top:40px;
}
.cases .cases-conl,.cases .cases-conr{
    width: 580px;

    object-fit: cover;
    margin: 0px 10px;
}
.cases .cases-conl img,.cases .cases-conr img{
    width: 580px;
    height: 435px;
    object-fit: cover;
}
.cases .cases-conl p,.cases .cases-conr p{
    width: 100%;
    text-align: center;
    padding: 20px;
    box-sizing: border-box;
    font-weight: bold;
    margin-bottom: 20px;
}








.back-top{
    position:fixed;
    right: 40px;
    bottom: 400px;
    border-right: 1px solid #0870EE;
    border-bottom: 1px solid #0870EE;
    /* display: none; */
}
.back-top img{
    width: 60px;
    height: 60px;
}