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Exactly. Another fundamental abstraction they should have mentioned in the article is [the surprising way z-index actually works](https://developer.mozilla.org
by tiglionabbit 6y ago
Exactly. Another fundamental abstraction they should have mentioned in the article is [the surprising way z-index actually works](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Positioning/Understanding_z_index https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Positio...), especially being aware of the existence of [stacking contexts](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Positioning/Understanding_z_index/The_stacking_context https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Positio...).