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![4. Understanding and Managing z-index - Developing Web Components [Book]](https://www.oreilly.com/api/v2/epubs/9781491905685/files/assets/dwbc_0403.png "4. Understanding and Managing z-index - Developing Web Components [Book]")
4. Understanding and Managing z-index - Developing Web Components [Book]
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4 reasons your z-index isn't working (and how to fix it)
