Learn Z-Index Using a Visualization Tool

There are some neat interactive demos in here from Thiru Manikandan. There are a couple of very tricky things with z-index that never fail to confuse. In addition to things like requiring positioning and source order, the trickiest are the stacking contexts and parent/child relationships. z-index isn’t a flat playing field. Even if you put z-index: 2147483644 on an element, it’s possible nothing will happen because that element might be inside a parent element with its own stacking context … Read article “Learn Z-Index Using a Visualization Tool”

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