# SEO & Semantic HTML Rules

> Standard guidelines for search engine optimization, meta descriptions, page speed parameters, and page structure.

## Document Structure & Heading Rules
- Ensure exactly one `<h1>` per page.
- Maintain a proper hierarchy for `<h2>` down to `<h6>`.
- Use HTML5 semantic elements (`<header>`, `<main>`, `<article>`, `<footer>`).

## Metadata Standards
- Title tag formatting: `null`
- Description constraints: `null` (Under 160 characters recommended)

## Performance Metrics
- Core Web Vitals target: `null`
