#grey-triangle-middle-left {	width:496px;	height:531px;	background:url(../images/grey-triangle-middle-left.png) top left no-repeat;	position:fixed;	display:none;	z-index:21;}#green-triangle-bottom-left {	width:496px;	height:1031px;	background:url(../images/green-triangle-bottom-left.png) top left no-repeat;	position:fixed;	display:none;	z-index:20;}