.text-block {
  width: 250px;
  margin: 50px;
}

#go-top {
  position: fixed; 
  font-family: sans-serif;
  line-height: 60px;
  text-align: center;
  font-size: 30px;
  color: rgba(255, 255, 255, .8);
  bottom: 5%; 
  right: 20px; 
  cursor:pointer; 
  display:none;
  width: 60px;
  height: 60px;
  background: #313536;
  border-radius: 60px;
}

#go-top:hover {
  text-decoration: none;
}