How Can I Correctly Layer Parent and Child Elements Using Z-Index in CSS?

Separating Parent and Child Elements in Z-Index

In CSS, the z-index property controls the layering of elements on a web page. However, sometimes a parent element may appear behind its child element despite having a higher z-index due to the way CSS handles stacking contexts.

To fix this issue, it's not always necessary to use a negative z-index on the child element. Instead, consider the following solution:

Remove Parent's Z-Index and Change Child's Z-Index:

Instead of setting a z-index on the parent, remove it and set a negative z-index on the child. This ensures that the child element remains below the parent without pushing it out of the page container.

Here's a revised CSS code:

.parent {
  position: relative;
  width: 350px;
  height: 150px;
  background: red;
  border: solid 1px #000;
}
.child {
  position: relative;
  background-color: blue;
  height: 200px;
  z-index: -1;
}

Ensure Relative Positioning:

Both the parent and child elements should have their position property set to relative or absolute to enable proper layering.

Example HTML:

<div class="wrapper">
  <div class="parent">parent 1 parent 1
    <div class="child">child child child</div>
  </div>
  <div class="parent2">parent 2 parent 2</div>
</div>

This solution places the parent element above its child without disrupting the page's overall layout or causing unexpected behavior.

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