.cd-top {
  border-radius:50%;
  display:inline-block;
  height:40px;
  width:40px;
  position:fixed;
  bottom:40px;
  right:10px;
  box-shadow:0 0 10px rgba(0, 0, 0, 0.05);
  overflow:hidden;
  text-indent:100%;
  white-space:nowrap;
  background:rgba(0, 0, 0, 0.8) url(../../assets/img/to-top.png) no-repeat center 50%;
  visibility:hidden;
  opacity:0;
  -webkit-transition:opacity .3s 0s, visibility 0s .3s;
  -moz-transition:opacity .3s 0s, visibility 0s .3s;
  transition:opacity .3s 0s, visibility 0s .3s;
  z-index:9999;
}

.cd-top.cd-is-visible, .cd-top.cd-fade-out, .no-touch .cd-top:hover {
  -webkit-transition:opacity .3s 0s, visibility 0s 0s;
  -moz-transition:opacity .3s 0s, visibility 0s 0s;
  transition:opacity .3s 0s, visibility 0s 0s;
}

.cd-top.cd-is-visible {
  visibility:visible;
  opacity:1;
}

.cd-top.cd-fade-out {
  opacity:.5;
}

.no-touch .cd-top:hover {
  background-color:#000000;
  opacity:1;
}

@media only screen and (min-width: 768px) {
  .cd-top {
    right:20px;
    bottom:20px;
  }
}

@media only screen and (min-width: 1024px) {
  .cd-top {
    height:60px;
    width:60px;
    right:30px;
    bottom:30px;
  }
}