PLEASE NOTE: AS OF WP 5.8, THIS PLUGIN IS NO LONGER SUPPORTED.
PAJ Divi Menu Options
This free plugin adds four basic options to the Divi desktop menu. The options are provided via the Theme Customizer which allows visual front-end customization and design changes.
Dropdown Menu Padding
You can alter the Divi drop-down menu padding Vertically and horizontally. You can also change the padding between the drop-down menu items.
Menu Line Effect
You can also add a hover menu style which appears to grow a line from left to right beneath or above the menu item being hovered over. The options for this style allow you to alter the line color, width, and position. The line can also be used with the drop-down menu.
The final option is the Menu Dropdown Icon which has three settings for the default, Triangle and arrow icons.