Template:Documentation/styles.css

.template-documentation, #documentation-meta-data {
    clear: both;
    margin: 1em 0 0 0;
    border: 1px solid #a2a9b1;
    background-color: #ecfcf4;
    padding: 5px;
}

@media screen {
    html.skin-theme-clientpref-night .template-documentation,
    html.skin-theme-clientpref-night #documentation-meta-data {
        background-color: #0b1e1c;
    }
}

@media screen and (prefers-color-scheme: dark) {
    html.skin-theme-clientpref-os .template-documentation,
    html.skin-theme-clientpref-os #documentation-meta-data {
        background-color: #0b1e1c;
    }
}