This article explains how to customize the menu + plus icon on the “Post Your Ad” button (CTA Button Menu Icon).
1. Firstly please consider you can edit Layout (Header + Footer) – this way:
How to customize header (menu colors, font-size etc.)
2. Now you will need to set your new icon. When you open Layout via Elementor you start with changing it on Desktop > “CTA Button Icon” Icon here:
3. To change it on mobile, please visit > “Button CTA”