Developing WordPress themes is considerably easier with real content. Unexpected situations begin to arise when people add pages, posts, media and comments. Your beautiful template can break when:
- editors use assets which are too big or small for your breakpoints to handle
- managers introduce a new menu item which doesn’t fit at lower screen sizes
- your theme implements a two-level menu hierarchy which fails to cater for the inevitable third-level page
- long or deeply-nested comments become unreadable.