[rsch]

There are obvious downsides to many of these CSS hacks. Pay close attention to the usage notes.

An example not on the page are menus powered by the CSS :hover pseudo-class. It seems smart, until you realise the diagonal problem exists, and it is quite hard to select an item in your menu without accidentally opening one of the sibling menus.

Unfortunately, software development seems extremely poor at passing knowledge on to the next generation so you see these problems being “rediscovered” over and over again.