.casecontent{
    width: 1200px;
    margin: 0 auto;
}
.casecontent .caselist{
    height: 100%;
    overflow: hidden;
}
.casecontent .caselist li{
    clear: both;
    height: 337px;
    margin-bottom: 60px;
    background: #F5F5FA;
}
.casecontent .caselist li .imgbox{
    float: left;
    width: 600px;
    overflow: hidden;

}
.casecontent .caselist li .imgbox img{
    transition: all .5s ease 0s;
}
.casecontent .caselist li:hover .imgbox img{
    transform: scale(0.9);
}
.casecontent .caselist li .protext{
    float: left;
    width: 600px;
    padding-left: 80px;
    text-align: center;
    position: relative;
}
.casecontent .caselist li:nth-child(2n-1) .protext::after{
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-right: 10px solid #f5f5f5;
    left: -10px;
    top: 158px;
}
.casecontent .caselist li:nth-child(2n) .protext::after{
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 10px solid #f5f5f5;
    left: 100%;
    top: 158px;
}
.casecontent .caselist li .protext h3{
    font-size: 24px;
    color: #151516;
    letter-spacing: 0.89px;
    padding-bottom: 30px;
    padding-top: 60px;
    width: 480px;
}
.casecontent .caselist li .protext p{
    font-size: 14px;
    color: #757892;
    letter-spacing: 0;
    line-height: 24px;
    width: 480px;
}
.casecontent .caselist li:hover .protext p{
    animation: fadeInUpT 0.5s linear;
}