#toTop {
	display:none;
	text-decoration:none;
	position:fixed;
	bottom:4px;
	right:4px;
	overflow:hidden;
	width:45px;
	height:45px;
	border:none;
	text-indent:100%;
	background:url(../imagens/acima.png) no-repeat left top;
}

@media screen and (min-width: 500px) {

	#toTop {
		background:url(../imagens/acima-50.png) no-repeat left top;
		width:50px;
		height:50px;
		border-radius:8px;
		bottom:15px;
		right:15px;
	}
}

#toTop:active, #toTop:focus {
	outline:none;
}