.mw-echo-ui-actionMenuPopupWidget-menu { &.oo-ui-menuSelectWidget { // Override width: 100%; rule from OOUI width: auto; } // We put MenutItemWidgets in the popup menu, as we reuse the same widgets when they appear outside the popup. // Re-style them to look more like DecoratedOptionWidgets instead of ButtonOptionWidgets .mw-echo-ui-menuItemWidget { display: block; .oo-ui-buttonElement-button { display: block; } &.oo-ui-labelElement:first-child { margin-left: 0; } } }