#back-to-top{position:fixed!important;bottom:10px;text-decoration:none;transition:opacity .2s ease-out;opacity:0}#back-to-top.show{opacity:.6}#back-to-top a{background-color:#1a1a1a;width:50px;border:solid #666 1px;border-radius:3px}.sp_icon{height:1.7em;width:1.7em;position:relative;top:-.2em}