The <h3> tag creates subsection headings within a page. It's the third level of heading hierarchy, used for subsections within h2 sections. You can use multiple h3 tags per page.

<h3>

The <h3> tag wraps subsection title text. It's a block-level element that creates a bold heading, smaller than h2 but larger than h4. Browsers render it with the third-largest default font size among headings.

<h3>Subsection Title</h3>

Headings create a hierarchy: h1 is the main title, h2 is for major sections, h3 for subsections within h2 sections. You can have multiple h3 tags to organize different subsections. Always use h3 after h2, not h4.

<h1>Main Title</h1>
<h2>Section One</h2>
<h3>Subsection A</h3>
<h3>Subsection B</h3>

In the browser, the h3 appears as a bold heading, smaller than h2. It helps organize content into subsections and improves navigation for both users and screen readers.

<h3>Subsection Title</h3>

Checkpoint: What heading level should come after h2?

<h2>Section</h2>
<h3>Subsection</h3>

Correct! Use h3 after h2 for subsections. You can have multiple h3 tags to organize different subsections within a section. This maintains proper document structure.

<h2>Section One</h2>
<h3>Subsection A</h3>
<h3>Subsection B</h3>

Now it's your turn. Subsection headings are essential for organizing content and improving navigation. Complete the challenges below to master the H3 tag!

h3.html

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Tutor:The <h3> tag creates subsection headings within a page. It's the third level of heading hierarchy, used for subsections within h2 sections. You can use multiple h3 tags per page.

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Concept 1: The H3 Tag

The <h3> tag creates subsection headings within a page. It's the third level of heading hierarchy, used for subsections within h2 sections. You can use multiple h3 tags per page.

System Check

What heading level should come after h2?

h1h3h4p

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HTML H3 Tag

Pascual Vila

Frontend Instructor.

The <h3> tag creates subsection headings within a page. It's the third level of heading hierarchy, used for subsections within h2 sections. You can use multiple h3 tags per page to organize different subsections.

📑Subsection Heading

The <h3> element represents subsections of content within h2 sections. It's a block-level element that browsers render with a font size smaller than h2 but larger than h4. You can use multiple h3 tags to organize different subsections within a section.

👑Heading Hierarchy

Headings create a document outline: <h1> is the main title, <h2> for major sections, <h3> for subsections. Always use h3 after h2, not h4. You can have multiple h3 tags to organize different subsections within a section.

🔍SEO and Accessibility

Subsection headings help search engines understand the structure and organization of your page content. Screen readers use headings to navigate pages, so proper heading structure with h3 subsections improves accessibility and user experience.

✅Best Practices

Use <h3> for subsections within h2 sections. You can have multiple h3 tags to organize different subsections. Use h4 for sub-subsections within h3 sections. Maintain a logical hierarchy without skipping levels. Use CSS to style headings rather than choosing heading levels based on appearance.

H3 Tag Glossary

<h3>: HTML element that creates subsection headings within a page. Used for subsections within h2 sections. You can use multiple h3 tags per page.
Heading Hierarchy: The logical structure of headings from h1 (main title) through h6 (smallest subheading). H3 comes after h2 and before h4.
Block Element: An element that creates a new line and takes full width. <h3> is a block-level element.
Subsection Organization: Using multiple h3 tags helps organize page content into distinct subsections within sections, improving readability and navigation.
Document Outline: The hierarchical structure created by headings. Screen readers and search engines use this to understand page organization. H3 subsections create the third level of this outline.

📖 INDEX