ul.smothscroll{z-index:99;list-style:none;position:fixed;bottom:25px;right:30px}ul.smothscroll a{text-align:center;color:#6c6a61;background-color:#c1c7c6;background-position:0;background-size:200%,1px;border:4px solid #c1c7c6;border-radius:3px;width:45px;height:45px;line-height:40px;display:block}ul.smothscroll a:hover{color:#fff;background-color:#c1c7c6}@media (max-width:767px){ul.smothscroll a{width:30px;height:30px;line-height:25px}}