12 Principles For Keeping Your Code Clean | CSS | Smashing Magazine

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13. Apply the concept of DRY to your websites — use Link [www.how-to-css.com] like navigation, footer, headers, etc.

14. Comment your closing div tags for when you come back to it in the future
**Most times when people don’t use logical ordering it is because they want the most important information at the top of the page for SEO reasons.