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How can I center an absolutely positioned element within a relative parent container?

Asked on Oct 23, 2025

Answer

To center an absolutely positioned element within a relative parent container, you can use a combination of CSS properties like `position`, `top`, `left`, and `transform`. Here's a concise example to demonstrate this approach.
<!-- BEGIN COPY / PASTE -->
    <div style="position: relative; width: 200px; height: 200px; background-color: lightgray;">
      <div style="position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); background-color: lightblue; width: 100px; height: 100px;">
        Centered
      </div>
    </div>
    <!-- END COPY / PASTE -->
Additional Comment:
  • The parent container must have `position: relative` to establish a positioning context for the child.
  • The child element uses `position: absolute` to allow it to be positioned within the parent.
  • `top: 50%` and `left: 50%` move the child element's top-left corner to the center of the parent.
  • `transform: translate(-50%, -50%)` shifts the child element back by half of its own width and height, centering it perfectly.
  • This method works regardless of the size of the parent or child elements.
✅ Answered with CSS best practices.

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