@import url("https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css");button.back-to-top{background:#fff;border:none;border-radius:50px;-webkit-border-radius:50px;-moz-border-radius:50px;bottom:75px;clear:both;color:transparent;cursor:pointer;display:block;font-size:0;height:0;margin:0!important;overflow:hidden;padding:0!important;position:fixed;right:50px;transition:all .3s ease-in-out;visibility:hidden;width:0;z-index:99}button.back-to-top,button.back-to-top:active,button.back-to-top:focus,button.back-to-top:hover{outline:0!important}button.back-to-top:before{content:"\f077";display:block;font-family:FontAwesome;margin:-5px 0 auto;vertical-align:middle}button.back-to-top.show{background:#f46419;bottom:50px;box-shadow:0 2px 4px 1px rgba(0,0,0,.25);-webkit-box-shadow:0 2px 4px 1px rgba(0,0,0,.25);-moz-box-shadow:0 2px 4px 1px rgba(0,0,0,.25);color:#fff;display:block;font-size:25px;height:50px;right:25px;visibility:visible;width:50px}button.back-to-top.show:active{box-shadow:0 4px 8px 2px rgba(0,0,0,.25);-webkit-box-shadow:0 4px 8px 2px rgba(0,0,0,.25);-moz-box-shadow:0 4px 8px 2px rgba(0,0,0,.25)}