How to style navigation menu in non Header module

When a Custom Menu widget is used in Header module, it gets styled automatically as can be seen in the demo site.

To get the same styling working in a non Header module, like say, a widget bar module, add this CSS code at end of your child theme's style.css.

Note: In the CSS code, "1" in ".builder-module-1" must be changed to match the position of module from the top.