#backToTop {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: none;
    background-color: #444;
    color: #fff;
    border: none;
    padding: 10px 15px;
    border-radius: 5px;
    font-size: 14px;
    cursor: pointer;
    z-index: 1000;
  }

  @media (max-width: 600px) {
    #backToTop {
      font-size: 12px;
      padding: 8px 12px;
    }
  }