docs fix: Fix the responsive layout of the official website

[WuMingDao]

Description

fix before

fix after

Related Issue

https://github.com/web-infra-dev/garfish/issues/729

Types of changes

• [x] Docs change / refactoring / dependency upgrade
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)

Checklist

• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.
• [x] I have updated the documentation.

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Project	Deployment	Preview	Comments	Updated (UTC)
garfish	Ready	Preview	Comment	Aug 21, 2025 11:48am

[WuMingDao]

#729 my issue