#btt{background-color:#f07323;border-radius:50%;bottom:10px;display:inline-block;height:50px;opacity:0;position:fixed;right:10px;text-align:center;transition:background-color .3s,opacity .5s,visibility .5s;visibility:hidden;width:50px;z-index:9999999999}#btt,#btt:after{text-decoration:none}#btt:after{color:#fff;content:"\f077";font-family:FontAwesome;font-size:2em;font-style:normal;font-weight:400;line-height:50px;transition:color .3s}#btt:hover{background-color:#555}#btt:hover,#btt:hover:after{cursor:pointer;text-decoration:none}#btt:hover:after{color:#f07323}#btt:active{background-color:#333;text-decoration:none}#btt.show{opacity:1;text-decoration:none;visibility:visible}@media (min-width:500px){#btt{margin:30px}}