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HyperText: Text with clickable links connecting pages
Markup: Special tags that describe content
Language: Set of rules browsers understand
By Tim Berners-Lee at CERN, Switzerland to share scientific documents. Today it powers the entire web!
Every website—from Google to YouTube—is built with HTML. It's the web's universal language.
Anyone can learn and use HTML for free. No licenses, no fees—just pure web creation power!
HTML organizes content into headings, paragraphs, lists, and sections—like chapters in a book.
Tags tell browsers "this is a button" or "this is a heading"—so they know how to display it.
HTML links let you jump from one page to another—that's what makes the web a "web"!
See how tags wrap around content to give it meaning
<div class="container">
<h1>Welcome to My Website!</h1>
<p>This is a paragraph of text. HTML tags give meaning and structure to content.</p>
<button onclick="this.textContent = 'Clicked! 🎉'">Click Me</button>
</div>Loading preview...
<h1>Welcome!</h1>• <h1> = Opening tag (starts the element)
• Welcome! = Content (what you want to show)
• </h1> = Closing tag (ends the element)
<h1>Main heading (biggest text)<p>Paragraph (normal text)<button>Clickable button<a>Link to another page<img>Image (no closing tag!)HTML has 6 heading levels—h1 is the biggest, h6 is the smallest
<h1>Heading 1 - Main Title</h1>
<h2>Heading 2 - Section Title</h2>
<h3>Heading 3 - Subsection</h3>
<p>Use headings to organize your content like a table of contents!</p>Loading preview...
The <a> tag creates clickable links—the heart of the web
<div class="nav">
<h2>Navigation Links</h2>
<p>Click any link below to navigate!</p>
<div class="links">
<a href="#home">🏠 Home</a>
<a href="#about">👤 About</a>
<a href="#contact">📧 Contact</a>
</div>
</div>Loading preview...
Two types: <ul> for bullet points, <ol> for numbered lists
<div class="lists">
<div class="list-box">
<h3>🛒 Shopping List</h3>
<ul>
<li>Apples</li>
<li>Bananas</li>
<li>Orange Juice</li>
<li>Bread</li>
</ul>
</div>
<div class="list-box">
<h3>📝 Recipe Steps</h3>
<ol>
<li>Preheat oven</li>
<li>Mix ingredients</li>
<li>Bake for 20 min</li>
<li>Let it cool</li>
</ol>
</div>
</div>Loading preview...
Proper HTML helps screen readers describe pages to people with visual impairments. Good tags = better access for everyone.
Search engines like Google read HTML to understand your content. Better HTML = higher rankings in search results!
CSS and JavaScript need HTML to work. Without HTML structure, you can't add colors, animations, or interactivity.
HTML is one of the easiest programming languages to start with. You can build your first webpage in minutes!
Create native popup dialogs and modals without JavaScript libraries. Built-in focus management and accessibility!
<dialog id="myDialog">Hello!</dialog>Serve different images for different screen sizes. Perfect for responsive design and faster loading!
<picture><source srcset="..."></picture>Embed videos and music directly without plugins. Add captions, controls, and custom players easily.
<video controls src="movie.mp4"></video>Tags like <header>, <nav>, <main>, <article>, <footer> make code more meaningful and accessible.
<main><article>Content</article></main>Experiment with HTML tags, see instant results, and build your first interactive webpage!