HTML & CSS Masterclass Tutorial

Comprehensive guide to modern HTML and CSS development.

Introduction

Introduction to HTML & CSS

HTML (HyperText Markup Language) and CSS (Cascading Style Sheets) are the two core technologies for building Web pages.

HTML provides the structure of the page, defining elements like headings, paragraphs, images, and links.
CSS provides the visual and aural layout, for a variety of devices (colors, fonts, layouts, animations).

Together, they form the foundation of everything you see on the modern web. Every website, from the simplest blog to the most complex web application, relies on HTML and CSS to render its interface.

Try It Yourself

Edit the code below and click Run to see the result live.

Source Code

<!DOCTYPE html>
<html lang="en">
<head>
  <style>
    /* CSS Section */
    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: #f4f4f9;
      color: #333;
      text-align: center;
      padding: 50px;
    }
    .intro-box {
      background: white;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.1);
      border-top: 5px solid #e34c26;
      max-width: 600px;
      margin: 0 auto;
    }
    h1 {
      color: #e34c26;
      font-size: 2.5em;
    }
    p {
      font-size: 1.2em;
      line-height: 1.6;
    }
    .btn {
      display: inline-block;
      margin-top: 20px;
      padding: 10px 25px;
      background: #264de4;
      color: white;
      text-decoration: none;
      border-radius: 5px;
      font-weight: bold;
      transition: background 0.3s ease;
    }
    .btn:hover {
      background: #1a3ab3;
    }
  </style>
</head>
<body>
  
  <div class="intro-box">
    <h1>Hello, World!</h1>
    <p>This is a complete example combining <strong>HTML</strong> for structure and <strong>CSS</strong> for styling.</p>
    <p>Notice how the colors, fonts, and shadows make the text pop out of the background!</p>
    <a href="#" class="btn">Explore the Web</a>
  </div>
</body>
</html>

Result

Topics

Introduction Environment Setup First Web Page Workflow & Tools Essentials Document Structure Text Content Lists & Tables Links & Navigation Images & Media Forms & Validation Reusable Components Styling Essentials Selectors & Specificity Cascade & Inheritance Typography Colors & Backgrounds Box Model Layout Fundamentals Positioning & Z-Index Flexbox CSS Grid Layout Patterns Responsive Design Responsive Components Custom Properties Calc & Functions Transitions Transforms Animations Effects & Filters Accessibility Design Systems Performance Debugging & Testing Tooling & Automation Landing Page Project Exercises Quiz

HTML & CSS Masterclass Tutorial

Course Topics

Introduction

Introduction to HTML & CSS

Try It Yourself

Topics