.st-block-video-background {
  position: relative;
}
.st-block-video-background .background {
  position: absolute;
  z-index: 0;
  width: 100%;
  height: 100%;
  left: 0px;
  top: 0px;
  overflow: hidden;
  opacity: 1;
  -webkit-backface-visibility: hidden;
}
.st-block-video-background .block-content {
  width: 100%;
  height: 100%;
}