RESOLVED DUPLICATE of bug 289876321268
height: fit-content is broken when position: fixed is used 
https://bugs.webkit.org/show_bug.cgi?id=321268
Summary height: fit-content is broken when position: fixed is used
Alex
Reported 2026-08-07 03:15:21 PDT
Create this layout: <section> I am some real content <div></div> </section> Apply these styles: section { height: fit-content; } div { height: 100%; } Everything works as expected. Now add "position: fixed" to section and its height becomes double the size because DIV adds another 100% of the height. Works properly in all other browsers, but Safari, see this Codepen: https://codepen.io/waterplea/pen/KwaEgJE
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Radar WebKit Bug Importer
Comment 1 2026-08-07 17:23:19 PDT
<rdar://problem/184375810>
alan
Comment 2 2026-08-07 17:30:57 PDT
Thank you for filing this bug report. I think it has already progressed on trunk. Let me find the progression point.
alan
Comment 3 2026-08-07 18:06:12 PDT
Progressed at https://commits.webkit.org/311084@main. *** This bug has been marked as a duplicate of bug 289876 ***
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