How to Fix Divs Appearing Out of Order Despite Correct z-Index Usage?

Controlling Stacking Order with z-index

When layering elements in HTML, z-index controls which elements appear on top. Despite correctly using z-index, one may encounter instances where a div remains beneath another div.

To resolve this issue, consider the following:

CSS Code:

<code class="css">div {
  width: 100px;
  height: 100px;
}

.div1 {
  background: red;
  z-index: 2;
  position: relative;
}

.div2 {
  background: blue;
  margin-top: -15vh;
  z-index: 1;
  position: relative;
}</code>

Explanation:

1. Add position: relative to both divs to create a stacking context. This allows z-index to function properly.
2. Set a higher z-index for the div that should appear on top (div1).
3. Ensure that the z-index of the underlying div (div2) is lower.

By implementing these steps, div1 will correctly appear above div2 in the desired stacking order.

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