Document Outline with Headings
HTML provides six levels of section headings: <h1> (highest level) to <h6> (lowest level). Search engines and screen readers use headings to understand the document structure.
<h1>Master Modern Web Development</h1>
<h2>Frontend Engineering</h2>
<h3>HTML5 Semantic Architecture</h3>
Formatting Elements:
<strong>: Important text (rendered bold by default).<em>: Emphasized text (rendered italic by default).<mark>: Highlighted or marked text.<code>: Inline computer code snippet.<pre>: Preformatted text with whitespace preservation.<blockquote>: Represents content quoted from an external source.