Platform under construction

HTML course

HTML becomes powerful when every topic has its own lesson.

The HTML course is now structured as a real learning platform. Use the left navigation to open a topic, then study the dedicated page with examples, code, mistakes, accessibility notes, SEO context and live labs.

<h1>One topic per page</h1>
<nav>Course navigation</nav>
<main>Deep lesson content</main>

HTML topics

Choose a lesson from the HTML course.

This page is the map. The real explanation lives on the individual topic pages. That keeps every lesson focused, gives search engines clean URLs and makes it possible to go deep without creating one endless file.

HTML Basics

HTML Introduction

Start here: learn what HTML is, what it does in the browser, how a page is structured and where CSS and JavaScript fit in.

Open lesson

HTML Basics

HTML Living Standard

Understand modern HTML as a Living Standard: continuously maintained, implemented by browsers and developed through WHATWG with W3C collaboration.

Open lesson

HTML Basics

HTML Editors

Set up the tools around HTML: a code editor, a browser, DevTools, a clean folder structure and a simple edit-save-refresh workflow.

Open lesson

HTML Basics

HTML Basic

Write your first real HTML page: doctype, html, head, body, title, metadata, visible content, file paths, browser parsing and a live code lab.

Open lesson

HTML Basics

HTML Elements

Explore the HTML element system and open dedicated lessons for headings, text, links, images, lists, forms, tables and layout.

Open lesson

HTML Basics

HTML Attributes

Learn how attributes configure elements: links, images, classes, ids, forms, metadata, accessibility and custom data.

Open lesson

HTML Basics

HTML Headings

Learn h1 to h6 as real document structure, with examples, accessibility notes, SEO guidance and a live code lab.

Open lesson

HTML Basics

HTML Paragraphs

Learn HTML Paragraphs as a practical HTML text lesson with syntax, examples, common mistakes, accessibility notes and a live code lab.

Open lesson

HTML Basics

HTML Line Breaks

Learn HTML Line Breaks as a practical HTML text lesson with syntax, examples, common mistakes, accessibility notes and a live code lab.

Open lesson

HTML Basics

HTML Formatting

Learn HTML Formatting as a practical HTML text lesson with syntax, examples, common mistakes, accessibility notes and a live code lab.

Open lesson

HTML Basics

HTML Quotations

Learn HTML Quotations as a practical HTML text lesson with syntax, examples, common mistakes, accessibility notes and a live code lab.

Open lesson

HTML Basics

HTML Comments

Learn HTML Comments as a practical HTML text lesson with syntax, examples, common mistakes, accessibility notes and a live code lab.

Open lesson

HTML Basics

HTML Entities

Learn HTML Entities as a practical HTML text lesson with syntax, examples, common mistakes, accessibility notes and a live code lab.

Open lesson

HTML Basics

HTML Symbols

Learn HTML Symbols as a practical HTML text lesson with syntax, examples, common mistakes, accessibility notes and a live code lab.

Open lesson

HTML Basics

HTML Emojis

Learn HTML Emojis as a practical HTML text lesson with syntax, examples, common mistakes, accessibility notes and a live code lab.

Open lesson

HTML Styling

HTML Colors & CSS

Learn HTML Colors & CSS as the bridge between clean HTML and professional CSS: visual hierarchy, maintainable styling, responsive behavior and live practice.

Open lesson

HTML Styling

Inline CSS

Learn Inline CSS as the bridge between clean HTML and professional CSS: visual hierarchy, maintainable styling, responsive behavior and live practice.

Open lesson

HTML Styling

Internal CSS

Learn Internal CSS as the bridge between clean HTML and professional CSS: visual hierarchy, maintainable styling, responsive behavior and live practice.

Open lesson

HTML Styling

External CSS

Learn External CSS as the bridge between clean HTML and professional CSS: visual hierarchy, maintainable styling, responsive behavior and live practice.

Open lesson

HTML Styling

HTML Responsive

Learn HTML Responsive as the bridge between clean HTML and professional CSS: visual hierarchy, maintainable styling, responsive behavior and live practice.

Open lesson

HTML Links & Media

HTML Links

Learn HTML Links with practical HTML examples for navigation, images, alt text, media behavior, metadata, accessibility, SEO and live practice.

Open lesson

HTML Links & Media

Link Targets

Learn Link Targets with practical HTML examples for navigation, images, alt text, media behavior, metadata, accessibility, SEO and live practice.

Open lesson

HTML Links & Media

HTML Bookmarks

Learn HTML Bookmarks with practical HTML examples for navigation, images, alt text, media behavior, metadata, accessibility, SEO and live practice.

Open lesson

HTML Links & Media

HTML Images

Learn HTML Images with practical HTML examples for navigation, images, alt text, media behavior, metadata, accessibility, SEO and live practice.

Open lesson

HTML Links & Media

Image Alt Text

Learn Image Alt Text with practical HTML examples for navigation, images, alt text, media behavior, metadata, accessibility, SEO and live practice.

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HTML Links & Media

Image Map

Learn Image Map with practical HTML examples for navigation, images, alt text, media behavior, metadata, accessibility, SEO and live practice.

Open lesson

HTML Links & Media

Background Images

Learn Background Images with practical HTML examples for navigation, images, alt text, media behavior, metadata, accessibility, SEO and live practice.

Open lesson

HTML Links & Media

Picture Element

Learn Picture Element with practical HTML examples for navigation, images, alt text, media behavior, metadata, accessibility, SEO and live practice.

Open lesson

HTML Links & Media

Favicon & Page Title

Learn Favicon & Page Title with practical HTML examples for navigation, images, alt text, media behavior, metadata, accessibility, SEO and live practice.

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HTML Data

HTML Tables

Learn HTML Tables with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

Open lesson

HTML Data

Table Borders

Learn Table Borders with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

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HTML Data

Table Sizes

Learn Table Sizes with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

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HTML Data

Table Headers

Learn Table Headers with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

Open lesson

HTML Data

Colspan & Rowspan

Learn Colspan & Rowspan with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

Open lesson

HTML Data

Table Colgroup

Learn Table Colgroup with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

Open lesson

HTML Data

HTML Lists

Learn HTML Lists with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

Open lesson

HTML Data

Unordered Lists

Learn Unordered Lists with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

Open lesson

HTML Data

Ordered Lists

Learn Ordered Lists with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

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HTML Data

Description Lists

Learn Description Lists with practical examples for tables, lists, structured data relationships, accessibility, SEO and live practice.

Open lesson

HTML Layout

Block & Inline

Learn Block & Inline with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Layout

HTML Div

Learn HTML Div with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Layout

HTML Span

Learn HTML Span with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Layout

Classes & ID

Learn Classes & ID with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Layout

Learn HTML Layout with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Layout

Semantic HTML

Learn Semantic HTML with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Layout

HTML Head

Learn HTML Head with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Layout

HTML Meta

Learn HTML Meta with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Layout

HTML Iframes

Learn HTML Iframes with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Layout

HTML Scripts

Learn HTML Scripts with practical examples for structure, layout semantics, metadata, embedded content, scripts, accessibility, SEO and live practice.

Open lesson

HTML Forms

Learn HTML Forms with practical examples for form structure, input behavior, validation, autocomplete, accessibility, backend safety and live practice.

Open lesson

HTML Forms

Form Elements

Learn Form Elements with practical examples for form structure, input behavior, validation, autocomplete, accessibility, backend safety and live practice.

Open lesson

HTML Forms

Input Types

Learn Input Types with practical examples for form structure, input behavior, validation, autocomplete, accessibility, backend safety and live practice.

Open lesson

HTML Forms

Form Validation

Learn Form Validation with practical examples for form structure, input behavior, validation, autocomplete, accessibility, backend safety and live practice.

Open lesson

HTML Forms

Autocomplete

Learn Autocomplete with practical examples for form structure, input behavior, validation, autocomplete, accessibility, backend safety and live practice.

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HTML Forms

Accessible Forms

Learn Accessible Forms with practical examples for form structure, input behavior, validation, autocomplete, accessibility, backend safety and live practice.

Open lesson

HTML Advanced

HTML Media

Learn HTML Media with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

Open lesson

HTML Advanced

HTML Video

Learn HTML Video with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

Open lesson

HTML Advanced

HTML Audio

Learn HTML Audio with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

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HTML Advanced

HTML Canvas

Learn HTML Canvas with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

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HTML Advanced

HTML SVG

Learn HTML SVG with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

Open lesson

HTML Advanced

Web Components

Learn Web Components with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

Open lesson

HTML Advanced

HTML Template

Learn HTML Template with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

Open lesson

HTML Advanced

Dialog Element

Learn Dialog Element with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

Open lesson

HTML Advanced

Details & Summary

Learn Details & Summary with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

Open lesson

HTML Advanced

Microdata

Learn Microdata with practical examples for rich HTML features, native browser behavior, accessibility, performance, SEO and live practice.

Open lesson

Production HTML

Accessibility & SEO

Learn Accessibility & SEO with production-focused HTML examples for accessibility, SEO, performance, security, validation, maintainability and live practice.

Open lesson

Production HTML

HTML Performance

Learn HTML Performance with production-focused HTML examples for accessibility, SEO, performance, security, validation, maintainability and live practice.

Open lesson

Production HTML

HTML Security

Learn HTML Security with production-focused HTML examples for accessibility, SEO, performance, security, validation, maintainability and live practice.

Open lesson

Production HTML

HTML Validation

Learn HTML Validation with production-focused HTML examples for accessibility, SEO, performance, security, validation, maintainability and live practice.

Open lesson

Production HTML

Best Practices

Learn Best Practices with production-focused HTML examples for accessibility, SEO, performance, security, validation, maintainability and live practice.

Open lesson

Production HTML

HTML Reference

Learn HTML Reference with production-focused HTML examples for accessibility, SEO, performance, security, validation, maintainability and live practice.

Open lesson

Decision helpers

Professional HTML is often choosing the right tool before writing the tag.

These small decisions prevent most beginner mistakes. Use them as quick checks when a page feels messy or when you are unsure whether a tag belongs in HTML, CSS or JavaScript.

section vs div

Use section when a group has a real topic and heading. Use div when you only need a neutral wrapper for styling or layout.

img vs background

Use img when the image carries content or meaning. Use background-image when the image is decorative presentation.

link vs button

Use a link when the user navigates somewhere. Use a button when the user triggers an action on the current page.

native HTML vs ARIA

Use native elements first. Add ARIA only when HTML cannot express the needed accessibility relationship by itself.

GET vs POST

Use GET for safe retrieval and shareable URLs. Use POST for submissions that change state or send sensitive data.

headings vs styling

Use heading levels for document hierarchy. Use CSS when you only want a different visual size.

Downloadable checklists

Turn the HTML course into a publishing workflow.

These checklists are intentionally practical. Use them after lessons and before publishing real pages. They make the course easier to apply to client work, portfolio projects and production systems.

Accessibility

Keyboard, landmarks, labels, links, images and readable structure.

SEO

Titles, descriptions, headings, internal links, visible content and clean URLs.

Forms

Labels, methods, input types, errors, autocomplete and backend validation.

Images

Alt text, dimensions, formats, lazy loading, srcset and picture decisions.

Security

Escaping, safe links, iframes, validation boundaries and third-party risk.

Validation

Doctype, nesting, IDs, paths, validator checks and DevTools sanity.

Real production cases

Connect the lesson to work that actually ships.

HTML becomes stronger when it is used inside real publishing systems: landing pages, course pages, SEO pages, forms and production templates that need to be readable, accessible and crawlable.

Full Stack Masterclass case

How this course platform is structured for crawlable lessons, internal links, analytics and long-term content growth.

Read the case