What is CSS

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What is CSS ?

CSS, which stands for Cascading Style Sheets, is a language used to style and arrange the look of HTML pages. "Welcome in Html to Hero" It allows developers to separate content (HTML) from design, enabling them to create visually appealing and user-friendly websites.
With CSS, you can define styles such as colors, fonts, spacing, and layout for web pages, ensuring consistency and flexibility across a site.

Key Features of CSS

  1. Separation of Content and Design
    • HTML focuses on structure and content, while CSS handles the visual styling, keeping the code clean and organized.
  2. Reusable Styles
    • CSS rules can be applied to multiple elements and pages, making it efficient and consistent.
  3. Responsive Design
    • CSS enables web pages to adapt to different screen sizes and devices, creating a better user experience.
  4. Rich Visual Customization
    • CSS provides tools for animations, transitions, and custom layouts, enhancing the interactivity and aesthetics of a website.

How CSS Works
CSS applies styles to HTML elements based on selectors, which target specific elements or groups of elements. Styles are applied through properties and their respective values.
Example:
h1 {
      color: blue;           /* Changes text color to blue */
      text-align: center;    /* Centers the text */
      font-size: 24px;      /* Increases the font size */
    }

Types of CSS

  1. Inline CSS
    • Styles are applied directly to individual elements using the style attribute.
    • Example:
      <h1 style="color: blue;">Welcome in Html to Hero</h1>

  1. Internal CSS
    • Styles are defined within a <style> tag in the <head> section of an HTML document.
    • Example:

<style>
    h1 {
          color: rgb(70, 107, 84);    
        }
</style>

  1. External CSS
    • Styles are written in a separate .css file and linked to the HTML document using the <link> tag.
    • Example:

<link rel="stylesheet" href="styles.css">

Example of CSS in Action
HTML File (index.html):
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSS Example</title>
    <link rel="stylesheet" href="styles.css"> <!-- Linking the CSS file -->
</head>
<body>
    <h1>Welcome in Html to Hero</h1>
    <p>CSS makes your web pages beautiful and functional!</p>
</body>
</html>

CSS File (styles.css):
body {
            font-family: Arial, sans-serif;
            background-color: #f8f9fa; /* Light gray background */
            color: #810202; /* Dark gray text */
            margin: 20px;
          }
h1 {
        color: darkblue;
        text-align: center;
        font-size: 2.5em;
      }
p {
        font-size: 1.2em;
        line-height: 1.6;
     }

Why Use CSS?

  1. Efficiency
    • A single CSS file can control the styles for an entire website, reducing repetitive coding.
  2. Consistency
    • By centralizing styles, CSS ensures a uniform look across all webpages.
  3. Flexibility
    • CSS allows you to make changes to the design without altering the HTML structure.
  4. Improved User Experience
    • Responsive design and rich visuals enhance how users interact with a site.

Conclusion: CSS is a key tool for building websites, helping developers make them look great, interactive, and work well on all devices. Whether you're building a small project or a large-scale application, CSS provides the flexibility and power to bring your designs to life.


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