MediaWiki:Common.css

/* CSS placed here will be applied to all skins */
.grid{
	display: grid;
}
.grid.three-columns{
	grid-template-columns: repeat(3, 1fr);
}
.grid.three-columns .full-width{
    grid-column: span 3;
}

/* Common */
pre{
	background-color: transparent;
    border: none;
    padding: 0;
    white-space: pre-wrap;
}