Editing Template:Div col/styles.css

/* {{pp|small=yes}} */
.div-col {
	margin-top: 0.3em;
	column-width: 30em;
}

.div-col-rules {
	column-rule: 1px solid #aaa;
}

/* Reset top margin for lists in div col */
.div-col dl,
.div-col ol,
.div-col ul {
	margin-top: 0;
}

/* Avoid elements breaking between columns
   See also Template:No col break */
.div-col li,
.div-col dd {
	page-break-inside: avoid; /* Removed from CSS in favor of break-inside c. 2020 */
	break-inside: avoid-column;
}