.video_shortcode_cover{
  position: relative;
  z-index: 1;
}

.video_shortcode_overlay{
  position: absolute;
  top: 0px;
  left: 0px;
  z-index: 2;
  background-repeat: no-repeat;
  background-position: center center;
  background-image: url('video-play-icon.png');
}

.video_shortcode_overlay:hover{
  background-image: url('video-play-icon_hover.png');
}