MediaWiki:Medik.css

/* Change colour of the footer */
.mw-footer {
    background-color: #eff5ff;
}

/* Change colour of the sidebar */
.container-fluid div.row div#mw-navigation.col-12.col-md-3.col-xl-2 {
    background-color: #eff5ff;
}

/* Make search input wider */
#searchInput {
    max-width: 100%;
    width: 600px;
}