#download {
    font-size: 30px;
    height: 50px;
    width: 100%;
    border-radius: 20px;
    border: 2px solid #4CAF50;
    background-position-y: 100px;
    transition-duration: 0.4s;
    
}
#download:hover {
    background-color: #4CAF50;
    color: white;
}