.back-to-top {
	position: fixed;
	bottom: 50px;
	right: 0px;
	text-decoration: none;
	color: #000000;
	background-color: rgba(235, 235, 235, 0.80);
	font-size: 12px;
	padding: 1em;
	display: none;
	border-top-left-radius: 5px;
    border-bottom-left-radius: 5px;
}
.back-to-top:hover {	
	background-color: rgba(135, 135, 135, 0.50);
}