Chapter 1: What is CSS? | WebLearner Pro

Chapter 1: What is CSS?

CSS (Cascading Style Sheets) is a powerful language used to control the style and layout of web pages. It allows developers to separate the content of a webpage from its design, making it easier to manage and maintain websites.

1.1 Why Use CSS?

CSS is essential for web development because it helps to:

  • Style text, fonts, colors, and backgrounds.
  • Control the layout and position of elements on a page.
  • Enhance website responsiveness for different screen sizes.
  • Reuse styles across multiple pages to maintain consistency.

1.2 How CSS Works with HTML

CSS works with HTML by applying styles to HTML elements. Here is an example of how to style an HTML page using CSS:


<!DOCTYPE html>
<html lang="en">
<head>
    <style>
        h1 { color: #3498db; }
        p { font-size: 16px; color: #333; }
    </style>
</head>
<body>
    <h1>Hello, WebLearner Pro!</h1>
    <p>This is a sample webpage styled with CSS.</p>
</body>
</html>

1.3 Types of CSS

There are three main ways to use CSS in your projects:

  1. Inline CSS - Adding styles directly inside HTML elements.
  2. Internal CSS - Using the <style> tag within the <head> section.
  3. External CSS - Linking to an external stylesheet file.

1.4 Benefits of Using External CSS

Using an external stylesheet offers several advantages:

  • Organizes your code better, making it easier to maintain.
  • Improves website loading speed by caching stylesheets.
  • Ensures consistent styling across multiple web pages.

1.5 Summary

In this chapter, we learned what CSS is and why it is important for web development. In the next chapter, we will explore CSS syntax and selectors in detail.