.scroll-up {
  background-color: #ab89cd;
  color: #FFFFFF;
  height: 3.5em;
  width: 3.5em;
  border: 0;
  border-radius: 5em;
  position: fixed;
  bottom: 5em;
  margin: 0;
  z-index: 10000;
  -webkit-transition: all .3s ease 0s;
  -moz-transition: all .3s ease 0s;
  -o-transition: all .3s ease 0s;
  transition: all .3s ease 0s;
  right: 1em;
  visibility: hidden;
  opacity: 0;
  -ms-transform: rotate(-90deg);
  -webkit-transform: rotate(-90deg);
  transform: rotate(-90deg);
}
.scroll-up:before {
  content: "➜";
  font-size: 2.5em;
  margin: 10px;
}
.scroll-up.on {
  visibility: visible;
  opacity: 1;
}
.scroll-up.on:hover,
.scroll-up.on:focus {
  background-color: #666666;
  color: #FFFFFF;
}
@media screen and (max-width: 34.9375em) {
  .scroll-up.on {
    visibility: hidden;
  }
}