wow, that so makes sense. So AttributedString decodes attributes consecutively, which matchings for each.

Thanks for your reply! That article is super helpful, however even it doesn’t touch about my question. Because WWDC Session did not show us about that.

For instance, like this tree - ViewController - View - UINavigationBar - UICollectionView (laying out to fullscreen, content-inset managed by safe-area)

Hi, Thank you for your answer. I have a question, how do you manage safe-area layout guide? If we don't set additional-safe-area-insets, the child view controllers or views lay their contents behind the UINavigationBar.