@media screen and (prefers-color-scheme: dark) {
    body {
        background-color: #0c1e31;
        color: #ffffff;
    }

    a:link, a:hover, a:focus {
        color: #00ffff;
    }

    a:visited, a:active {
        color: #ffff00;
    }
}

@media screen and (max-width: 980px) and (prefers-color-scheme: dark) {
    #menu .zone {
        background-color: #112a46;
    }
}

@media screen and (min-width:981px) and (prefers-color-scheme: dark) {
    #menu .zone, main {
        background-color: #112a46;
    }
}