I am using mozilla firefox version 16.0.2, which I think is the latest version. My website () looks perfect when I check it there. Can it be that an earlier version of firefox would look differently? And is there a way for me to check it? (Because my client sent me screenshots from his browser, also mozilla firefox, and it looks messed up there.)
Thanks!

Dani AI

Generated

described a layout that renders correctly on their machine but appears broken in the client screenshots. reports seeing the page OK on their install, and suggested vendor-prefixed rules (they wrote "mozkit" — the correct Firefox prefix is -moz-). Differences like this are usually environmental rather than a single mysterious bug in the site.

A concise diagnostic checklist that produces useful evidence:

  • Confirm the client's exact Firefox build and platform (Help > About Firefox or about:support) and whether any major add-ons or a custom profile are active.
  • Verify browser zoom and OS scaling (non-100% zoom or DPI scaling often shifts layouts). Use Ctrl+0 to reset zoom.
  • Reproduce with extensions disabled (Firefox Safe Mode or a fresh profile) to rule out add-ons.
  • Capture the page with Developer Tools open (Inspector showing computed styles and the box model) so applied rules and sizes are visible.
  • Isolate the failing rule with a minimal test case (single HTML file containing only the questionable CSS) to tell whether it is a CSS interpretation issue, resource loading problem, or something else.
  • Prefer unprefixed properties and feature detection; when prefixes are needed use the correct -moz- form for Firefox and consider an autoprefixing tool in the build step.

Collecting a short set of artifacts from the client (exact version string, a devtools screenshot showing computed styles, and a minimal failing HTML/CSS) makes it practical to pinpoint whether this is a version quirk, a profile/extension issue, or a CSS bug.

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Member Avatar for Member #936213

i just checked it in 13.0.1 and it looks fine , what sort of problems are being experienced ? also what version is your client using ?

I know that you would have to use things in your css like mozkit.

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