#presentation_view{
	background-color:black;
	width:100%;
	height:100vh;
	position:fixed;
	top:0px;
	left:0px;
	overflow:hidden;
	visibility:hidden;
}
#slide_content{
	width:100%;
	position:absolute;
	top:50%;
	transform:translate(0,-50%);
	color:white;
}