#scrollUp {
	padding: 10px 15px; border-radius: 100%; transition:background 200ms linear; right: 20px; bottom: 20px; color: rgb(255, 255, 255); font-family: sans-serif; font-size: 12px; text-decoration: none; opacity: 0.8; background-color: rgb(85, 85, 85); -webkit-transition: background 200ms linear; -moz-transition: background 200ms linear; -o-transition: background 200ms linear; -webkit-border-radius: 100%; -moz-border-radius: 100%; -webkit-backface-visibility: hidden;
}
#scrollUp:hover {
	background-color: rgb(0, 0, 0);
}