STEP 1: How to trigger a Popup from a Nav menu item?
You can have a mega menu type of navigation, using the Popup Elementor feature. Please check the detailed tutorial below:
STEP 2: How to edit the Flowers popup mega menu?
The "Flowers" navigation item leads to a popup named "Flowers - Mega Menu - Home 2". You can locate this template in Dashboard > Templates > Popups.
Click on "Edit with Elementor" to edit the menu, images, button's link, etc.
Follow the above steps for customizing the "Plants", "Services", "Floral classes" menus.