- **Global fonts**: Adjusted `font-family` fallback to include `serif`.
- **Header improvements**: Refined structure with flexbox, adjusted heights, and fixed responsive issues (e.g., removed hardcoded margins).
- **New Layout styles**: Added scoped `Layout.css` for better layout control and modularity.
- **Links fix**: Corrected casing in `About` and `Contact` links for proper navigation.
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