Bootstrap vs css difference

BootstrapComparisonBeginner · 4 min read

Bootstrap vs CSS: Key Differences and When to Use Each

Bootstrap is a ready-made CSS framework that provides pre-designed components and layout utilities, while CSS is the core language used to style web pages from scratch. Bootstrap speeds up design with built-in styles, but CSS offers full control and customization for unique designs.

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Quick Comparison

Here is a quick side-by-side look at Bootstrap and CSS based on key factors.

Factor	Bootstrap	CSS
Type	CSS framework with pre-built styles and components	Styling language for web pages
Ease of Use	Easy to start with ready classes	Requires writing styles manually
Customization	Customizable but limited by framework	Fully customizable with no limits
Design Consistency	Built-in consistent design system	Depends on developer's design skills
Learning Curve	Lower for basic use	Higher for complex styling
File Size	Includes extra CSS and JS files	Only what you write, usually smaller

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Key Differences

Bootstrap is a collection of CSS and JavaScript files that provide ready-made styles and components like buttons, grids, and navigation bars. It helps developers build responsive and consistent layouts quickly without writing all styles from scratch.

On the other hand, CSS is the fundamental language used to style HTML elements. It gives you full freedom to create any design but requires more time and skill to write and maintain styles manually.

Bootstrap uses predefined classes and a grid system to handle layout and responsiveness, while with plain CSS you write your own rules and media queries. Bootstrap also includes JavaScript plugins for interactive components, which pure CSS does not provide.

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Code Comparison

This example shows how to create a simple responsive button using Bootstrap.

html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Bootstrap Button</title>
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
  <button class="btn btn-primary">Click Me</button>
</body>
</html>

Output

A blue styled button labeled 'Click Me' with padding and hover effect

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CSS Equivalent

Here is how to create a similar styled button using only CSS.

html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>CSS Button</title>
  <style>
    .btn {
      background-color: #0d6efd;
      color: white;
      padding: 0.375rem 0.75rem;
      border: none;
      border-radius: 0.25rem;
      font-size: 1rem;
      cursor: pointer;
      transition: background-color 0.15s ease-in-out;
    }
    .btn:hover {
      background-color: #0b5ed7;
    }
  </style>
</head>
<body>
  <button class="btn">Click Me</button>
</body>
</html>

Output

A blue styled button labeled 'Click Me' with padding and hover effect

🎯

When to Use Which

Choose Bootstrap when you want to build a website quickly with a consistent design and responsive layout without writing much CSS. It is great for prototypes, dashboards, and projects where speed matters.

Choose plain CSS when you need full control over your design, want a unique style, or are building a small site with custom needs. CSS is essential for learning how styling works and for projects where performance and minimal file size are priorities.

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Key Takeaways

Bootstrap is a ready-made CSS framework that speeds up web design with pre-built styles and components.

CSS is the core styling language offering full control but requires writing styles manually.

Use Bootstrap for fast, consistent, responsive layouts and CSS for custom, unique designs.

Bootstrap includes JavaScript plugins; CSS alone does not provide interactive components.

Learning CSS fundamentals is important even when using Bootstrap.