fix(docs): replace code element with div to fix invalid HTML nesting #6166
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The code element was wrapping div and table elements, which is invalid HTML since code is phrasing content and can only contain other phrasing content. This caused browsers to auto-close the code element during HTML parsing, leading to a DOM structure different from what React expected. During hydration, this mismatch caused the table elements to briefly lose their display styles, collapsing code blocks into a single line on desktop. Co-Authored-By: Colton Berry <coltonsberry@gmail.com>
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🌱 Smoke Test PreviewRun at: 2026-01-09 03:01:53 UTC Testing branch changes with smoke test content:
🕷️ Smoke Test Crawler ResultsPages crawled: 56 ❌ Pages with Errors📊 Full error breakdown
See full details in the workflow logs. |
Ryan-Amirthan
approved these changes
Jan 9, 2026
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Fixes code blocks collapsing into a single line on desktop during page load.
Short description of the changes made
Replaced
<code>elements with<div>elements inFernSyntaxHighlighterTokens.tsxandFernSyntaxHighlighterTokensVirtualized.tsx. The<code>element was wrapping<div>and<table>elements, which is invalid HTML.What was the motivation & context behind this PR?
Users were seeing code blocks collapse into a single line on desktop during page load, with line numbers appearing inline with code content (e.g.,
1{2 "message": {3 "type"...).The root cause is invalid HTML nesting:
<code>is phrasing content and can only contain other phrasing content, but it was wrapping<div>and<table>(flow content). Browsers auto-close the<code>element during HTML parsing to "fix" this, creating a DOM structure different from what React expects. This hydration mismatch caused table elements to briefly lose their display styles.The
<pre>element already provides the semantic meaning of preformatted text, so removing the<code>wrapper is acceptable.How has this PR been tested?
.code-blockclass (notcode.code-blockelement selector)Human review checklist
code.code-blockspecifically<code>elementLink to Devin run: https://app.devin.ai/sessions/8458f6ca712f47788f7e038841776689
Requested by: Colton Berry (@coltondotio)