.photoshow{
   width: 100%;
    /*min-width:1200px;*/
    position: relative;
}
.photoshow img{
    /*width: 100%;*/
    min-height: 300px;
}
.header{
    position: absolute;
    top: 0;
    width: 100%;
    min-width: 1200px;
}
@media screen and (max-width: 1500px) {
    .zhangshi ul li .bottom h4{
        padding-top: 80px;
    }
}
.zhangshi{
    padding-bottom: 51px;
    min-width: 1200px;
}
.zhangshi .top ul{
    width: 330px;
    margin: 0 auto;
}
.zhangshi .top ul li{
    float: left;
    margin-right: 50px;
    margin-top: 54px;
    margin-bottom: 37px;
    width: 100px;
    text-align: center;
}
.zhangshi .top ul li a{
    display: block;
    font-size: 16px;
    color: #6e6e6e;
    padding-bottom: 15px;
    border-bottom: 2px solid #fff;
}
.toplishow{
    border-bottom: 2px solid #cd314a!important;
}
.zhangshi .top ul li:nth-last-of-type(1){
    margin-right: 0;
}
.exhibition{
    min-width: 1200px;
}
.exhibition h2{
    font-size: 32px;
    text-align: center;
    padding-bottom: 38px;
}
.exhibition h3{
    font-size: 25px;
    color: #4c4948;
    font-weight: normal;
    text-align: center;
    padding-bottom: 45px;
}
.cases .line{
    margin: 0 auto 32px;
    width: 72px;
    height: 2px;
    background: #cb2842;
}
.exhibition ul li{
    width: 25%;
    height: 25%;
    float: left;
    position: relative;
}
.exhibition ul li .top{
    background-size: 100% 100%;
}
.exhibition a{
    display: block;
}
.exhibition ul li .bottom{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:rgba(191,44,66,0.9);
    opacity: 0;
    transition: 1s;
}
.exhibition ul li .bottom h4{
    text-align: center;
    padding-top: 105px;
    font-size: 22px;
    color: #fff;
    padding-bottom: 16px;
}
.exhibition ul li .bottom p{
    text-align: center;
    font-size: 15px;
    color: #fff;
    padding-bottom: 24px;
}
.exhibition ul li .bottom .icon{
    width: 34px;
    margin: 0 auto;
}

.exhibition ul  li .top img {
    width: 100%;
}