.scrolltop { position: fixed; right: 20px; bottom: 20px; -moz-border-radius: 100%; -webkit-border-radius: 100%; border-radius: 100%;
  display: inline-block; width: 40px; height: 40px; line-height:35px; font-family: 'Sans-serif'; font-size: 2em; text-align: center; text-decoration: none;
  background-color: rgba(77, 172, 225, 0.86); color: #fff;  visibility: hidden; opacity: 0; -moz-transition: 0.5s; -o-transition: 0.5s;
  -webkit-transition: 0.5s; transition: 0.5s; z-index:9999}
.scrolltop:visited { color: #fff;}
.scrolltop:hover { text-decoration: none; color: white;}
.scrolltop:focus { text-decoration: none;}
.scrolltop.active { visibility: visible; opacity: 1;}