.backtop{background-color:#803a00;border-radius:10px;bottom:3%;cursor:pointer;font-size:1.5em;height:45px;line-height:4rem;position:fixed;right:10px;text-align:center;width:45px;z-index:99}.backtop i{line-height:1.1;vertical-align:top}.backtop a{color:#fff;text-decoration:none}