.dn{display:none; } 
.m-pop{z-index: 10001;position: fixed;left: 0;right: 0;top:0;bottom:0;background: rgba(0,0,0,.5);}
#m-video video,#m-video embed{display: block;width: 100%;height: 100%;}
.m-pop .inner{width: 100%;height: 100%;position: absolute;left: 0;top: 0;background: #000;}
.m-pop .close{
    display: block;
    width: 58px;height: 58px;
    position: absolute;right: 10px;top: 10px;z-index: 1001;
    cursor: pointer;
    background: url(../images/video_close.png) no-repeat left top;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    -o-transition:.3s;
    -ms-transition:.3s;
    -moz-transition:.3s;
    -webkit-transition:.3s;
    transition:.3s;
}
.m-pop .close:hover{
     background-position: 0 -68px;
}