#backtotop {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: inline-block;
  padding: 12px;
  padding-left: 18px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  z-index: 99;
  border: solid thin #fff;
}
#backtotop svg {
  transform: rotate(-90deg);
}
@media (max-width: 576px) {
  #backtotop {
    bottom: 12px;
    right: 12px;
  }
}