Links

Manual CSS

Add CSS for all the pages

Add CSS to the page MediaWiki:Common.css.
Same but for a specific user Special:MyPage/common.css.

Add CSS for mobile

Add CSS to the page MediaWiki:Mobile.css

Modifier le style d'un skin

/usr/share/webapps/mediawiki/skins/MonSkin/SkinMonSkin.php

function setupSkinUserCss( OutputPage $out ) {
    ...

    // ajout des fichiers css
    $out->addStyle( $this->stylename . '/custom.css', 'screen' );
    $out->addStyle( $this->stylename . '/geshi.css', 'screen' );
}