## Essential HTML5 Document Structure

    <!DOCTYPE html>
    <html lang="en">
      <head>
        <meta charset="utf-8" />
        <title>Document Title</title>
      </head>
      <body>
        <header><!-- page header --></header>
        <main><!-- main content of page --></main>
        <footer><!-- page footer --></footer>
      </body>
    </html>

- html
  - head
    - meta
    - title
  - body