.btns {
    text-decoration: none;
    color: #fff;
    padding: 15px 10px;
    background-color: #8FB533;
    border-radius: 5px;
    transition: 1s;
    margin: 5px;
}

.btns:hover {
    background-color: #678616
}

#download {
    background-color: #a6c6db;
}

#download:hover {
    background-color: #8f9eaf;
}

#buy {
    background-color: #ad4242;
}

#buy:hover {
    background-color: #793838;
}

iframe {
    width: 100%;
    height: 600px;
}