body,html{
  position: absolute;
  top: 0;
  left: 0;
  -moz-osx-font-smoothing:antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  width: 100%;
  height: 100%;
  margin:0;
  background-color: #000; /*fff;*/
  -webkit-overflow-scrolling: touch;
  -webkit-transition: background-color 0.2s; /* Safari prior 6.1 */
  transition: background-color 0.2s;
  scroll-behavior: smooth;
}
iframe{
  border-width: 0px;
}
.test-holder{
  /*margin:10vw;*/
}
.ll-container{
  /* https://www.w3schools.com/howto/howto_css_aspect_ratio.asp */
	position: relative;
  width: 100%;
  padding-top:56.25%; 
}

.visible{
	position: absolute;
  left: 0px;
  top: 0px;
	width:100%;
	height: 100%;
	opacity: 1;
  mix-blend-mode: screen;
}