config.css

/* fallback */
@font-face {
    font-family: 'Material Icons';
    font-style: normal;
    font-weight: 400;
    src: url(https://fonts.gstatic.com/s/materialicons/v85/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2) format('woff2');
             }

.material-icons {
    font-family: 'Material Icons';
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -moz-font-feature-settings: 'liga';
    font-feature-settings: 'liga';
    -moz-osx-font-smoothing: grayscale;
}

a.forum_link {
    color: black;
}

a.forum_link:hover {
    color: darkmagenta;
}

a.forum_link:visited {
    color: darkviolet;
}

#wholeWindow {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(128, 128, 128, 0.5);
    backdrop-filter: blur(10px);
    color: black;
}

#configWindow {
    position: absolute;
    top: 50%;
    left: 50%;
    padding: 5px;
    transform: translate(-50%, -50%);
    background-color: darkgray;
    border: solid 1px black;
    border-radius: 5px;
}

fieldset {
    padding: 2px;
    border-radius: 5px;
}

#messages {
    padding: 2px;
    border: 0.1px solid white;
    border-radius: 5px;
    margin-top: 2px;
    text-align: center;
    display: none;
}

.message {
    color: darkred;
    border: 0.1px solid white;
    border-radius: 5px;
}

.buttons {
    margin-top: 5px;
    width: 100%;
}

.buttons tr td:first-child {
    text-align: left;
}

.buttons tr td:last-child {
    text-align: right;
}

#configButton {
    position: fixed;
    top: 5px;
    right: 5px;
    cursor: pointer;
}

#warning {
    display: none;
    color: red;
}