/zed ˈɪndeks/
A CSS property that controls the stacking order of positioned elements — higher values appear on top.
"The modal overlay needs z-index: 1000; the dropdown, z-index: 200 — otherwise the dropdown bleeds through."
Master z-index in context by working through exercises in the CSS & Frontend module. You'll see the term used in real engineering scenarios with multiple-choice, fill-in-the-blank, and matching drills.
A CSS property that controls the stacking order of positioned elements — higher values appear on top.
"z-index" is pronounced /zed ˈɪndeks/.
"The modal overlay needs z-index: 1000; the dropdown, z-index: 200 — otherwise the dropdown bleeds through."
"z-index" is filed under the CSS & Frontend vocabulary module — click the module link above to see related terms and a matching exercise.
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Yes — related terms include Stacking context. See "Related terms" above to explore them.
Yes — the CSS & Frontend module has interactive exercises that use "z-index" and related terms in realistic sentences, with instant feedback on each answer.
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