Understanding Bootstrap 4: Your Ultimate Cheat Sheet

May 26, 2024 | Programming

If you’re tinkering with web development, chances are you’ve heard of Bootstrap, the popular CSS framework. Enter Bootstrap 4, with its sleek design and enhanced functionality! In this article, we’ll guide you through how to seamlessly transition from Bootstrap 3 to Bootstrap 4 using a handy cheat sheet.

Getting Started with Bootstrap 4

Transitioning your projects from Bootstrap 3 to Bootstrap 4 can feel daunting, but with the right tools, it’s a breeze. Bootstrap 4 introduces several new features and differences, and the Bootstrap 4 Cheat Sheet is here to save the day. Think of it as your treasure map leading you to the shiny new features among the rocky terrain of old code!

Key Differences Between Bootstrap 3 and Bootstrap 4

When upgrading or starting new projects, here are some key differences you should be aware of:

  • Flexbox Implementation: Bootstrap 4 utilizes Flexbox for layout design, making it easier to create responsive layouts compared to Bootstrap 3.
  • Improved Grid System: With Bootstrap 4, new grid tiers and new classes for clearer semantic meaning have been introduced.
  • Card Component: This replaces panels, wells, and thumbnails, bringing more cohesive containers for your content.
  • Utility Classes: Bootstrap 4 includes numerous utility classes that allow for quicker customization without the need for additional CSS.

Using the Bootstrap 4 Cheat Sheet

The cheat sheet serves as a robust reference that highlights syntax differences, class changes, and new features. As you tackle your project, you can simply look up what you need to know and implement it directly into your codebase – easy peasy!

Example Code Usage

To illustrate how to apply something from Bootstrap 4, let’s use an analogy. Picture yourself navigating a city (your project) using an old map (Bootstrap 3). Now, switching to a new city map (Bootstrap 4) gives you access to smoother streets and shortcuts (Flexbox), making your journey more efficient. Here’s a snippet of code to help you visualize:



Primary Button


Card title

Some quick example text to build on the card title.

Go somewhere

Troubleshooting Your Bootstrap 4 Journey

As you make your transition, you might run into some bumps along the way. Here are some troubleshooting tips:

  • Mismatched Classes: If elements aren’t styled correctly, double-check the class names against the cheat sheet to ensure you’re using Bootstrap 4 classes.
  • JavaScript Conflicts: Remove any outdated JavaScript code from Bootstrap 3 to avoid conflicts with the new Bootstrap 4 scripts.
  • Compatibility Issues: Make sure your HTML structure follows Bootstrap 4’s syntax. Always refer back to the cheat sheet for guidance.

For more insights, updates, or to collaborate on AI development projects, stay connected with fxis.ai.

Final Thoughts

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.

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