#downloadBtn{
    position: fixed;
    bottom: 30px;
    right: 20px;
    background-color: #FAB702;
    padding: 12px 16px;
    border: black;
    border-radius: none;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    z-index: 1000;
    display: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#downloadBtn:hover{
    background-color: coral;
}

#downloadBtn.show{
    opacity: 1;
    visibility: visible;
}