.delta-demo-8 canvas, 
.delta-demo-8 #videocanvas {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: -1;
}

.delta-demo-8 #work_media {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  width: 100%;
  height: 100%;
  overflow: auto;
  opacity: 0;
}

.delta-demo-8 .work_media_wrap {
  padding-top: 100vh;
  padding-bottom: 50vh;
}

.delta-demo-8 .work_media_wrap .media {
  height: 750px;
  background-color: #CCC;
  border: 1px solid;
}

.delta-demo-8 .work_media_wrap .media img {
  display: none;
}