.scroll-top-wrapper {
  position:fixed;
  opacity:0;
  visibility:hidden;
  overflow:hidden;
  text-align:center;
  z-index:99999999;
  background-color:#777777;
  color:#eeeeee;
  width:50px;
  height:48px;
  line-height:48px;
  right:30px;
  bottom:30px;
  padding-top:2px;
  border-top-left-radius:10px;
  border-top-right-radius:10px;
  border-bottom-right-radius:10px;
  border-bottom-left-radius:10px;
  -webkit-transition:all 0.5s ease-in-out;
  -moz-transition:all 0.5s ease-in-out;
  -ms-transition:all 0.5s ease-in-out;
  -o-transition:all 0.5s ease-in-out;
  transition:all 0.5s ease-in-out;
}

.scroll-top-wrapper:hover {
  background-color:#888888;
}

.scroll-top-wrapper i.fa {
  line-height:inherit;
}