.cont h2{
    color: #0c7ed9;
    font-size: 0.32rem;
    font-weight: bold;
    width: 7.1rem;
    margin: 0.29rem auto 0;
    border-bottom: 1px solid #cccccc;
    padding-bottom: 0.19rem;
    margin-bottom: 0.5rem;
}
.video{
    position: relative;
    width: 6.88rem;
    height: 5.05rem;
    background: #000;
    overflow: hidden;
    margin: 0 auto 0.12rem;
}
.video img:nth-child(1){
    width:  6.88rem;
    height: 5.05rem;
}
.video img:nth-child(2){
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    width: 1.25rem;
    height: 1.25rem;
    z-index: 99;
}
.video .mask{
    position: absolute;
    left: 0;
    top: 0;
    z-index: 9;
    width: 6.88rem;
    height: 5.05rem;
    background: rgba(0,0,0,.3);
}

.videos{
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6.88rem;
    height: 5.05rem;
    transform: translate(-50%,-50%);
    z-index: 100;
}
.videos video{
    width: 6.88rem;
    height: 5.05rem;
}