.back-to-top {
  position: fixed;
  bottom: 50px;
  right: 20px;
  width: 50px;
  height: 50px;
  background-color: rgba(85, 84, 84, 0.5);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.back-to-top image {
  width: 35px;
  height: 35px;
}