A sidebar layout needs fixing because A header should remain attached to the viewport while the page scrolls.. What CSS should be added?

CSS Published 03 Oct 2026 Updated 03 Oct 2026 0 Views Verified

Problem: A header should remain attached to the viewport while the page scrolls. Context: This CSS troubleshooting question uses a sidebar layout example. Correct approach: Use position:fixed and reserve space for the header in the layout. Working CSS: .header { position:fixed; inset:0 0 auto; z-index:1000; }

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Answer & Explanation

4 Answers

Verified Correct Answer

A. Correct CSS solution

.header { position:fixed; inset:0 0 auto; z-index:1000; }

Additional Explanation

Use position:fixed and reserve space for the header in the layout.

Verified

B. Common but incorrect approach

Use position:absolute only

Additional Explanation

This approach does not directly implement the required CSS behavior.

Verified

C. Incorrect CSS alternative

Use float:top

Additional Explanation

This is not a valid CSS property or does not solve the stated problem.

Verified

D. Another incorrect approach

Use transform:fixed

Additional Explanation

This does not address the underlying CSS layout or styling issue.