.videowrap{
    width: 1200px;
    height: 100%;
    background: red;
    margin: 60px auto
}
.col-md-4{
    width: 30.8%;
    float: left;
    height: 230px;
    margin: 0 45px 60px 0;
    position: relative;
}
.col-md-4 .imgs{
    width: 100%;
    height: 100%;
}
.col-md-4 video{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    z-index: -1;
}
.col-md-4 p{
    position: absolute;
    bottom: 0;
    text-align: center;
    height:50px;
    line-height: 50px;
    background:rgba(0,0,0,0.5);
    width: 100%;
    color: white;
    z-index: 999;
}
.picbox{
    width: 50px;
    height: 50px;
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 9999;
    transform: translate(-50%,-50%)
}