Structuring HTML with semantic tags

header: header semantic tag in HTML <header>
- navigation bar:. nav semantic tag in HTML - navigation bar <nav>
main content:, main semantic tag in HTML <main>
- article article semantic tag in HTML <article>
- section section semantic tag in HTML <section>,
- div div - BLOCK level non semantic element <div>
- sidebar: aside semantic tag in HTML - sidebar
footer: footer semantic tag in HTML <footer>.