* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Microsoft Yahei";
  background-color: #fff;
}

a {
  text-decoration: none;
  cursor: pointer;
}
a img {
  border: none;
}
ul li {
  list-style: none;
}
.clear::after {
  content: '';
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}
.video-m {
    background: #F6F7F9;
}
    .video-m .staff-box {
        width: 6.9rem;
        height: 4.2rem;
        background: #FFFFFF;
        box-shadow: 0rem 0rem 0rem 0rem rgba(109, 115, 171, 0.17);
        border-radius: 0.1rem;
        padding:0.2rem 0.22rem 0;
        margin-bottom:0.4rem;
        position:relative
    }
        .video-m .staff-box .fm-img {
            width: 6.46rem;
            height: 3.34rem;
        }
        .video-m .staff-box .btn-img {
            width: 0.77rem;
            height: 0.77rem;
            position:absolute;
            top:1.49rem;
            left:3.07rem
        }
            .video-m .staff-box .desc {
                font-size: 0.22rem;
                font-family: Source Han Sans CN;
                font-weight: 500;
                color: #373749;
                line-height: 0.22rem;
                margin-top:0.22rem;
          
            }
    .video-m .video-mask {
        width: 100%;
        height: 100%;
        z-index: 301;
        background: #000;
        position: fixed;
        top:0;
        left:0
    }
        .video-m .video-mask .close-img {
            margin: 0.46rem 0.666667rem;
            width: 0.48rem;
            height: 0.466667rem;
        }
        .video-m .video-mask .desc {
            font-size: 0.28rem;
            color: #e0e0e0;
            margin-left: 0.4rem;
            margin-top: 0.413333rem;
        }