You can choose the Arrow highlight style for your menu items in Avada > Theme Options > Menu > Main Menu. This effect will not appear for main menu items when using a transparent header background. However, sub-menu items will still have the lower half of the arrow effect.
This style is most effective when a slider, or page Title Bar, or other colored content sits right up to the header, or if the header itself has a colored background or image. If the header is white, and the content directly below the header is white, the arrows will not be able to be seen.
There are several settings which can be used to adjust the positioning and appearance of the main menu when using this effect. These are listed below, along with an explanation of how they affect your menu.