.imgbox {
  overflow: hidden;
  background-color: #f7f7f7;
  position: relative;
  cursor: pointer;
  width: 104px;
  height: 104px;
  margin: 0 8px 8px 0;
  border: 1px solid #d9d9d9;
  border-radius: 2px;
}
.videomask {
  position: absolute;
  z-index: 10;
  width: 100px;
  height: 100px;
  margin: 0 auto;
  line-height: 100px;
  background: rgba(0, 0, 0, 0.3);
  text-align: center;
}
.videomask .icon {
  display: inline-block;
  font-size: 26px !important;
  color: #fff !important;
}