video.loading {
	background: black url(img/Loading_icon.gif) center center no-repeat;
}
#video-loader {
  width:100%;
  height:calc(75vw);
  background-color:#333;
  margin-top: calc(-1 * 75vw);
  z-index:999;
  visibility:hidden;
  opacity:0.3;
}
#video-loader div {
  position: relative;
   top: 50%;
  transform: translateY(-50%);
  margin-left: auto;
  margin-right: auto;
}
video {
  width: 100%    !important;
  height: auto   !important;
  max-width: 800px;
  max-height: 600px;
}