hard20 pts · first answer countscssstacking-context

z-index that does not work

A modal has position: fixed; z-index: 9999 but appears behind a header with z-index: 10. The modal is inside a parent with transform: translateZ(0) and z-index: 1. Why?

A.position: fixed ignores z-indexB.The parent creates a stacking context, so the modal is stacked inside the parent, which is below the headerC.z-index values above 1000 are ignoredD.The header must also use position: fixed

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z-index that does not work

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