#scrollUp{bottom:20px;right:20px;background-color:#555;color:#fff;font-size:12px;font-family:sans-serif;text-decoration:none;opacity:.9;padding:10px 20px;-webkit-border-radius:16px;-moz-border-radius:16px;border-radius:16px;-webkit-transition:background 200ms linear;-moz-transition:background 200ms linear;-o-transition:background 200ms linear;transition:background 200ms linear;-webkit-backface-visibility:hidden}#scrollUp:hover{background-color:#000}