Post-process PurgeCSS output to remove position:relative from .navbar,
allowing CriticalCSSService's position:sticky to take effect.
This prevents bootstrap-subset.min.css from overriding the navbar
sticky positioning set by the critical CSS system.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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