@media screen and (min-width: 769px) {
  .bottom {
    display: block;
    bottom: auto;
    top: 50%;
    right: 0;
    left: auto;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    text-orientation: mixed;
    height: 250px;
    width: 40px;
  }
  .bottom__btn {
    width: 100%;
    margin: 0 0.1rem;
    line-height: 2.5rem;
    border-radius: 0.5rem 0 0 0.5rem;
  }
  .bottom__btn::before {
    margin-right: 0.25rem;
    margin-bottom: 0.25rem;
  }
}