fix(home): stop config section resizing on tab switch

[ryzrr]

Summary
Just wondering if we could stop the config section layout resizing on tab switch

What kind of change does this PR introduce?
fix

Did you add tests for your changes?
no

Does this PR introduce a breaking change?
no

If relevant, what needs to be documented once your changes are merged or what have you already documented?
no

Use of AI
no

[vercel]

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Project	Deployment	Actions	Updated (UTC)
webpack-doc-kit	Ready	Preview	Aug 3, 2026 9:15pm

[github-actions]

⚡ Lighthouse report

Audited the Vercel preview deployment: https://webpack-doc-1bqhycrse-openjs.vercel.app

URL	Performance	Accessibility	Best Practices	SEO	Report
/	🟢 94	🟢 96	🟢 100	🟢 100	🔗
/about	🟢 99	🟢 97	🟢 100	🟢 100	🔗
/about/sponsors	🟠 85	🟢 95	🟢 96	🟢 100	🔗
/blog	🟢 99	🟢 96	🟢 100	🟢 100	🔗
/blog/posts/2026-02-04-roadmap-2026	🟢 99	🟢 93	🟢 100	🟢 100	🔗
/guides/getting-started	🟢 95	🟢 97	🟢 100	🟢 100	🔗
/docs/api/options	🔴 68	🟢 96	🟢 100	🟢 100	n/a
/docs/loaders/css-loader	🟢 99	🟢 97	🟢 100	🟠 83	🔗

Scores are advisory (warn at 90); they do not fail the build. See .lighthouserc.json.