.ir-arriba {
	padding:20px;
	display:inline-block;
	background: #31a3dd;
	color:#fff;
	position: fixed;
	border-radius: 50%;
	font-size:24px;
	bottom:20px;
	right:20px;
	display:none;
	cursor:pointer;
	z-index: 100;

}

@media screen and (max-width: 800px) {
	.ir-arriba {
		padding:17px;
		position: fixed;
		font-size:17px;
		bottom:15px;
		right:15px;
	}
}