+
+ // Trigger only when collapsible & JS is available via `.mw-collapsed`.
+ .client-js & .oo-ui-fieldsetLayout.mw-collapsed .oo-ui-fieldsetLayout-header {
+ // Negative margin to match the reduced distance on the top caused by the previous rule.
+ margin-bottom: -( @ooui-spacing-large - @ooui-spacing-medium );
+
+ .oo-ui-labelElement-label {
+ margin-bottom: 0;
+ }
+ }