When creating your menu in WordPress, there are several options with the menu and the menu items that will affect how the menu will display on the page, whether assigned via the WordPress Menu Options, or displayed using the Menu Element.
Please review the Menu Settings doc for a full rundown of what you can configure while building a menu, but these primarily include the Avada Menu Options, found in every menu item, and the Avada Special Menu Items, found at the bottom left of the menu area.
For example, with the Avada Menu Options, you can style a menu item as a button, add an icon or show the menu item only as an icon, add a Menu Highlight Label, or enable a Mega Menu on the item. All of these options would affect how the menu displayed when using the Menu Element, and as such, the styling for such aspects of the menu items would come from the Menu itself, and not the Menu Element.
And with the addition of the Avada Special Menu Items in Avada 7.0, this is where you would add things like WooCommerce iconized menus, Search bars and Sliding Bar Toggles, if wanting to use a menu with the Menu Element.