Interactive Study Module
HTML Introduction & Page Structure
By Tim Berners-Lee
4 min read
Verified Curriculum
Step 1: What is HTML?
The Foundation of Every Web Page on the Internet
HTML stands for HyperText Markup Language. It is the universal standard language that describes the structural skeleton of web documents. Browsers read HTML documents and render them into visual interactive web pages.
Analogy: Imagine constructing a modern building: HTML is the steel girders, concrete foundation, and room walls. CSS is the paint and wallpaper, and JavaScript is the electricity, elevators, and automatic doors.
Step 2: Interactive Syntax Anatomy
Anatomy of an HTML Document
<!DOCTYPE html><html lang="en"><head><body><h1>Hello World</h1>
- <!DOCTYPE html> must be the very first line so the browser renders in standards mode.
- HTML tags usually come in pairs like <p> (opening tag) and </p> (closing tag).
- The <body> element contains everything visible: paragraphs, headings, images, and tables.
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Interactive Browser DOMStep 4: Active Recall Knowledge Check
+25 XPWhat does HTML stand for in web development standards?
Step 5: Remember This! (Memory Anchors)
HTML Key Anchors to Never Forget
- Rule 1: Always include <!DOCTYPE html> at the beginning of every file.
- Rule 2: Every HTML page must have exactly one <html>, one <head>, and one <body> element.
- Rule 3: Always close tags with </tagname>, except for void elements like <img>, <br>, and <input>.
- Rule 4: Use lowercase tag names as per modern web best practices.
⚠️ Common Pitfall / Gotcha: Void elements (like <img> or <meta>) do NOT have closing tags — writing <img></img> is invalid HTML syntax.
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