<!DOCTYPE html> (Standards Mode)
<html lang="en"> (Document Root)
<head> (Metadata Pipeline)
• <meta charset="utf-8">
• <meta name="viewport" ...>
• <title>Page Title</title>
<body> (Visible DOM Tree)
• <header> Banner </header>
• <main> Core Content </main>
• <footer> Colophon </footer>
Step 1
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