#installButton {
    visibility: visible;
    display: block;
    margin-left: auto;
    margin-right: auto;
    background: repeating-linear-gradient(-20deg, rgb(255, 103, 103), rgb(255, 137, 172), rgb(207, 87, 255));
    background-blend-mode: lighten;
    transition: all 0.25s ease-out;
}

#installButton:disabled {
    visibility: hidden;
    display: none;
    margin-left: auto;
    margin-right: auto;
    background: repeating-linear-gradient(-20deg, rgb(255, 103, 103), rgb(255, 137, 172), rgb(207, 87, 255));
    background-blend-mode: lighten;
    transition: all 0.25s ease-out;
}