HTML Topics
HTML Module

HTML Introduction

HyperText Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It defines the structure and meaning of web content.

Status: Coming Soon

We are crafting this tutorial

Our team is working on interactive diagrams, code challenges, and exercises for HTML Introduction. Check back soon for the full guide!

What You'll Learn

  • 1What is HTML? (HyperText Markup Language)
  • 2Understanding standard elements and opening/closing tags
  • 3Anatomy of a basic HTML skeleton (html, head, body)
  • 4The purpose of the <!DOCTYPE html> declaration
  • 5History and evolution of HTML5 standards
sandbox.html
<!DOCTYPE html>
<html>
  <head>
    <title>My First Web Page</title>
  </head>
  <body>
    <h1>Hello, World!</h1>
    <p>Welcome to my first website built with CodeX Cider!</p>
  </body>
</html>
Interactive playground coming soon

Visual Analogy

🏠 The Building Skeleton Analogy

Think of a website like building a house. 1. HTML is the concrete pillar structure and brick wall framework. It holds the content. 2. CSS is the styling (wall paint, wallpapers, and layout designs). 3. JavaScript is the active plumbing and electrical wiring that makes it functional.

Common Pitfalls

Forgetting to close elements with closing tags (e.g. leaving out </h1>) can break your layout formatting across browsers.

🎯 Interview Prep Q&A

Q: What is the difference between an HTML Tag and an HTML Element?

A tag is a syntax markup (like <h1>), while an element includes the opening tag, the content inside, and the closing tag (like <h1>Hello World</h1>).

Q: Why do we write <!DOCTYPE html>?

It tells the web browser which HTML standard version is being used (specifically HTML5 in this case) so pages render in standard mode rather than quirks mode.