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Beginner Topic 2 of 51 Web Development

HTML Basics

Markup language structuring web page content.

How it works

HTML, HyperText Markup Language, describes the structure and content of web pages using elements written as tags, such as headings, paragraphs, links, lists, images and tables. Elements can have attributes like href and src and can be nested into a tree. A document starts with a doctype and has a head for metadata and a body for visible content. Browsers parse it forgivingly into the DOM.

Step-by-step walkthrough

  1. The document is a tree of nested elements.
  2. The head holds metadata such as title.
  3. The body holds visible content.
  4. Tags like h1 and p mark headings and paragraphs.
  5. The browser turns the markup into the DOM tree.

Where it is used

Every web page, email template and web application interface uses HTML as its foundation. Search engines, screen readers and browsers rely on correct markup to understand content.

Common pitfall

Missing closing tags, invalid nesting and using elements for appearance instead of meaning cause inconsistent behavior. Skipping alt text on images and a lang attribute harms accessibility and SEO. Inline styles scattered through markup are hard to maintain. Validate markup, use proper elements and keep presentation in CSS.

Where it fits in the course

HTML Basics is topic 2 of 51 in Web Development, rated Beginner. It follows How the Web Works. The next topic is HTML Forms.

Practice and explore

How to study this topic

  1. Read the explanation above and restate the definition in your own words.
  2. Open the interactive lesson and answer its mini quiz.
  3. Read the common pitfall, then write a short example that avoids it.
  4. Check your understanding in the Web Development quiz, and revisit the topic if you miss a question.

Frequently asked questions

What is HTML Basics?
Markup language structuring web page content. It belongs to Web Development and is a beginner-level topic.
Where do people use HTML Basics?
Every web page, email template and web application interface uses HTML as its foundation.
What is the most common mistake with HTML Basics?
Missing closing tags, invalid nesting and using elements for appearance instead of meaning cause inconsistent behavior.
What should I learn before this topic?
Start with How the Web Works, the topic just before it in Web Development.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the Web Development quiz.
Is HTML Basics hard to learn?
It is a Beginner topic, so it works as an entry point. If the terms are new, read the explanation twice and try the visualizer before the quiz.
How long does it take to learn HTML Basics?
Most learners can read the explanation and finish the interactive lesson in under an hour. Fluency comes from applying the idea, so plan a few short practice sessions with the quiz.
Which topics are related to HTML Basics?
How the Web Works, HTML Forms, Semantic HTML are closely connected. The full list is in the related topics section of this page.
What should I study after HTML Basics?
Continue with HTML Forms, the next topic in Web Development.

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