MediaWiki:Common.css

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/* CSS placed here will be applied to all skins */


<style>
/* Category sorting */
.mw-normal-catlinks ul {
    columns: 2; /* Adjust the number of columns as needed */
    -webkit-columns: 2;
    -moz-columns: 2;
}

.mw-normal-catlinks ul li {
    display: inline-block;
    width: 100%;
    box-sizing: border-box;
}
</style>