#topButton {
    display: none;
    position: fixed;
    bottom: 2%;
    right: 2%;
    z-index: 99;
    font-size: 18px;
    border: none;
    outline: none;
    background-color: gray;
    color: white;
    cursor: pointer;
    padding: 1.5%;
    border-radius: 1%;;
  }
  
#topButton:hover {
    background-color: #555;
}