How do I change the Navigation element layout of the SP Page Builder Pro? Standard font colors etcetera are found in the settings, but there seem to be nowhere to adjust that what is seen when the user has pressed the burger menu (background and foreground color, width of that menu etcetera. The standard layout works very badly in our website (wrong font color, wrong background color, the menu that opens when pressing the burger has the wrong width and a wrong background color and so on). CSSing in the Style settings for the element does not work wor me, neither does adding layout to custom.css.