@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #1c1c19;
        --fr-color: #e3e3e0;
    }
}

@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #eeeeeb;
        --fr-color: #3e3e3e;
    }
}