body {
    direction: rtl;
}

.google-drive-auth-failed {
    display: none;
}

.hide-everything {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgb(100, 60, 60, 60);
    background: rgba(100, 60, 60, 60);
}

.center {
    position: fixed;

    left: 50%;
    width: 280px;
    margin-left: -140px;

    top: 50%;
    height: 180px;
    margin-top: -90px;
    
    background: white;
    border: solid black;
    border-width: 1px 1px 2px 2px;
}
body {
    direction: rtl;
}

.google-drive-auth-failed {
    display: none;
}

.hide-everything {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(100, 60, 60, 60);
}

.no-google-drive-auth .hide-everything {
    background: rgba(100, 100, 100, 60);
}

.center {
    position: fixed;

    left: 50%;
    width: 280px;
    margin-left: -140px;

    top: 50%;
    height: 180px;
    margin-top: -90px;
    
    background: white;
    border: solid black;
    border-width: 1px 1px 2px 2px;
}
Change background for non-error message.
Change background for non-error message.
