jquery.vidbacking.css

.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;
}