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Why Isn't My Sticky Element Working Inside Its Parent Container?

Mary-Kate Olsen
Release: 2024-12-27 08:46:09
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Why Isn't My Sticky Element Working Inside Its Parent Container?

Sticky Elements Not Working Within Parents

You may encounter scenarios where position: sticky doesn't behave as expected when nested within another element.

The issue arises because position: sticky considers the parent element's size. If the parent element's height is determined by its sticky child, there's no space for the child to stick to.

Example:

.nav-wrapper {
  position: absolute; 
  bottom: 0;
}

.nav-wrapper nav {
  position: sticky;
  top: 0;
}
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<div class="nav-wrapper">
  <nav>
    <a href="#"><li>Home</li></a>
    <a href="#"><li>About</li></a>
  </nav>
</div>
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Adding a border to visualize the issue:

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

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

body {
  min-height:200vh;
}
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<div class="nav-wrapper">
  <nav>
    <a href="#">
      <li>Home</li>
    </a>
    <a href="#">
      <li>About</li>
    </a>
  </nav>
</div>
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Solution:

To solve this, ensure that the parent element has its size independently defined, leaving space for the sticky child. This can be achieved using CSS properties like height or min-height.

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