.vidbacking-active-body-back { position: fixed; z-index: -100; min-width: 100%; min-height: 100%; top: 50%; left: 50%; background-size: cover; overflow: hidden; opacity: 1; transition: 2s opacity; transform: translateX(-50%) translateY(-50%); }
.vidbacking-active-body-back-youtube { position: fixed; z-index: -100; /*min-width: 100%; min-height: calc(100% * 1.77);*/ top: 50%; left: 50%; overflow: hidden; opacity: 1; transition: 2s opacity; transform: translateX(-50%) translateY(-50%); }
.vidbacking-active-block-back { position: absolute; min-width: 100%; min-height: 100%; height: auto; width: auto; z-index: -100; top: 50%; left: 50%; transform: translateX(-50%) translateY(-50%); }
.vidbacking-active-block-back-youtube{ position: absolute; /*min-width: 100%; min-height: 100%;*/ height: auto; width: auto; z-index: -100; top: 50%; left: 50%; transform: translateX(-50%) translateY(-50%); }
.vidbacking { display: none; }
.vidmask-body-back { /*background: url(videooverlay1.png) repeat;*/ opacity: 0.4; min-height: 100%; min-width: 100%; position: fixed; top: 0; left: 0; z-index: -50; display: block; }
.vidmask-block-back{ /*background: url(videooverlay1.png) repeat;*/ opacity: 1; min-height: 100%; min-width: 100%; position: absolute; top: 0; left: 0; height: auto; width: auto; z-index: -50; display: block; }