Martijn Cuppens (the same fella with the very weird div!) has some more irresistible CSS trickery. Three of the examples are about making a child element trigger an event on a parent element (almost like the magic that is
Here’s how I reasoned it out to myself:
- You know how if you
display: hidden;an element, even if you
display: block;a child, it doesn’t matter — it’s hidden because its parent is hidden.
- The same is not true for
visibility: hidden;. Children will be hidden because
visibilityinherits, but if you
visibility: visible;them, they become visible again.
- That’s what is happening here with
pointer-events. If you
pointer-events: none;on a parent and then
pointer-events: auto;on a child, you’re re-enabling pointer events. Then a
:hoveron a parent will be triggered (for example), when hoving the child, but nowhere else inside the parent.
And don’t miss
pointer-events: visiblePainted; ?
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