Why Does My Sticky Navigation Disappear When Nested Within Another Element?

Problem: Sticky Position Disappears When Element is Nested

In your CSS, you've defined a sticky navigation within another element, but it fails to maintain its sticky behavior when nested. Why is this occurring?

Explanation:

Position: sticky calculates its position relative to its parent element. When you nest the navigation within another element (e.g., .nav-wrapper), the parent element determines the sticky behavior.

Unfortunately, in your example, the .nav-wrapper has its height determined by the sticky .nav element. As a result, there's no space available within the parent for the .nav element to stick to.

Solution:

To resolve this issue, you can add a border to the parent element to illustrate the problem. As you scroll, you'll notice that the parent's height matches the navigation's height, leaving no room for sticky behavior.

Example with Border:

.nav-wrapper {
  position: absolute;
  bottom: 0;
  border: 2px solid;
}

.nav-wrapper nav {
  position: sticky;
  top: 0;
}

body {
  min-height:200vh;
}

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