How to Fix Div Overlap Issues with z-index?

Resolving Div Overlap Using z-index

In certain scenarios, you may encounter issues with divs overlapping even when using the z-index property. To ensure the desired layering effect, it's important to understand the correct usage of z-index and consider using additional CSS properties to create a stacking context.

In the given example, the intended behavior is for div1 to appear above div2. However, merely assigning a higher z-index value to div1 may not always yield the expected result. To address this, you should add the position: relative property to both divs. This creates a stacking context within the elements, allowing z-index to take effect correctly.

The modified code below incorporates this fix:

<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>

By adding position: relative to both divs, we create a dedicated stacking context for these elements. This ensures that the higher z-index value assigned to div1 is respected, resulting in div1 being displayed above div2 as intended.

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