mediawiki-skins-Vector/resources/skins.vector.styles/components/PageTools.less

// Ensure there is only 1 page tools landmark at anytime
.vector-feature-page-tools-pinned-enabled .vector-page-toolbar-container .vector-page-tools-landmark,
.vector-feature-page-tools-pinned-disabled .vector-column-end .vector-page-tools-landmark {
	display: none;
}

// Ensure collapsible items are visible on lower resolutions
.vector-page-tools .vector-more-collapsible-item {
	display: block;

	@media ( min-width: @min-width-breakpoint-tablet ) {
		display: none;
	}
}

// Make sure pcactions is displayed on lower resolutions (even if .emptyPortlet present)
.vector-page-tools .vector-has-collapsible-items {
	@media ( max-width: @max-width-breakpoint-mobile ) {
		display: block;
	}
}