#scrolltotopButton
{
  display:block;
  position:fixed;
  bottom:80px;
  right:-50px;
  z-index: 90000002;
  font-size:15px;
  border: none;
  outline: none;
  background:white;
  cursor: pointer;
  padding:2px;
  border-radius:50%;
  transition:1s;
  color:#0f101e;
  text-shadow:1px 1px 2px black;
  width:30px;
  height:30px;
  box-shadow:0px 0px 10px 1px black;
}

#scrolltotopButton:hover
{
  background:linear-gradient(to right, purple, orange);
  transition:1s;
  color:white;
}