#button{display:inline-block;background-color:#f1673b;width:45px;height:45px;text-align:center;border-radius:4px;position:fixed;bottom:0;right:30px;transition:background-color .3s,opacity .5s,visibility .5s;opacity:0;visibility:hidden;z-index:1000;border-radius:100%}#button::after{content:"\f077";font-family:FontAwesome;font-weight:normal;font-style:normal;font-size:1em;line-height:42px;color:#fff}#button:hover{cursor:pointer;background-color:#616874}#button:active{background-color:#616874}#button.show{opacity:1;visibility:visible}@media(min-width:500px){#button{margin:30px}}