z-index only works on positioned elements (position: absolute, position: relative, position: fixed, or position: sticky) and flex items (elements that are direct children of display:flex elements). w3school
Child behind Parent
parent: Not set any z-index (it's important), set position relative (by default though it's relative).
child: Give any positional value (absolute, sticky or fixed), and z-index any negative integer value.
Now, the child is behind the parent element. ✅
➕
Scenario
- If you have a situation so to make the parent element
fixed,stickyorabsolutethen what?
Simple, since child element will not work with z-index: -1; or behind parent, if parent is other than relative. Just wrap the parent element with any tag and make it fixed, sticky or absolute.
<div class="wrapper fixed-or-sticky-or-absolute"> 👈wrapper tag
<div class="parent relative">
<div class="child any-position-will-work z-index(-1)"></div>
</div>
</div>
Moreover, you can now give any z-index value to the wrapper element tag and it will not affect the child and parent.
Done.
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Top comments (2)
I was facing a problem where this exact fix helped me. Why is it important to omit the z-index from the parent? Can you also add a reference to the documentation where this is mentioned? Thanks.
Good to know it helps!