Why Doesn\'t div1 Appear Above div2 Despite Higher z-index?

Placing a Div Above Another Div Using z-index

In web development, you may encounter situations where you need to layer divs on top of each other to achieve desired visual effects. However, you might find that using z-index does not always produce the expected results.

One common issue is when div1 refuses to appear above div2 despite giving it a higher z-index value. The reason behind this could be the lack of proper stacking context.

To establish a stacking context, you should add the CSS property position: relative to both divs. This creates a new stacking context where z-index values can function as intended.

Here is an updated version of your 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>

With this modification, div1 should now properly appear above div2. Remember, z-index only affects the stacking order within the same stacking context.

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