The itemSpacing prop can optionally be applied to the Nav parent element and accepts an object through which any of our Spacing (padding, margin) global prop values can be passed as an object. All spacing values passed to itemSpacing will be applied to all navItems within the nav. Spacing (padding, margin) global props can still be used on nested navItems in conjunction with itenSpacing on the Nav for customized control. Any Spacing (padding,margin) global props applied directly to a navItem will override any competing itemSpacing value.