.return-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: url('../return-to-top/backtotop.png') no-repeat center center;
  background-size: contain;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.2s ease;
}

.return-to-top.show {
  display: inline-block;
  opacity: 1;
}

.return-to-top:hover {
  transform: scale(1.1);
  filter: brightness(1.2);
}
.return-to-top {
    width: 70px;
    height: 70px;
    bottom: 4rem;
}