.ir_arriba{
	
	-webkit-border-radius: 20px 20px 20px 20px;
	-moz-border-radius: 20px 20px 20px 20px;
	border-radius: 20px 20px 20px 20px;
	
		
	display:inline-block;
	display:none;
	padding:20px;
	background:#006699;
	font-size:20px;
	color:#FFF;
	cursor:pointer;
	position:fixed;
	bottom:10px;
	right:10px;
		
}