CSS Flexbox Playground
The CSS Flexbox Playground is an interactive, browser-based tool that allows you to experiment with key CSS Flexbox properties visually. Adjust container and item properties, observe real-time layout changes, and export both HTML and CSS code for seamless integration into your projects.
How to Use This Tool
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Master CSS Flexbox layout with our interactive Flexbox Playground. This comprehensive tool helps designers and developers understand and implement flexible box layouts through visual experimentation.
Configure Container Properties
Control the main flex container behavior with precision settings. Choose flex direction (row, row-reverse, column, column-reverse) to establish the main axis. Set justify-content to distribute items along the main axis (flex-start, center, space-between, space-around, space-evenly). Define align-items to position items on the cross axis (stretch, flex-start, center, baseline). Control multi-line alignment with align-content and choose wrapping behavior (nowrap, wrap, wrap-reverse). Adjust gap spacing (0-50px) and container height (100-600px) for perfect layout control.
Customize Individual Items
Select specific items (1-5) to apply unique properties. Set align-self for individual cross-axis alignment (auto, flex-start, center, stretch). Control flexibility with flex-grow (0-5) to determine how items expand, flex-shrink (0-5) to control contraction, and flex-basis (0-200px or auto) to set initial size. Reorder visually with order property (-5 to 5). Add or remove items dynamically to test different layout scenarios.
Visual Playground Interface
The interactive preview area displays real-time layout changes. Toggle visual axes to see main and cross axis directions. Switch dimension display to understand item sizing. Change container background color and select from preset item colors for better visual distinction. Choose between fixed sizing, variable sizing, or content-based sizing modes to simulate different layout scenarios.
Learn Through Experimentation
Observe how each property affects layout behavior in real-time. The playground provides immediate visual feedback, making it perfect for understanding flexbox concepts like:
Main axis vs cross axis alignment
Item distribution and spacing
Wrapping behavior in constrained spaces
Flexible sizing and proportional growth
Visual reordering without HTML changes
Generate Production Code
Copy clean, optimized CSS code for both container and items. The tool generates vendor-prefix-free code that works in all modern browsers. Export your layout configurations as JSON files for future reference or team sharing.
This flexbox playground is essential for front-end developers, UX designers, and anyone learning CSS layout. Perfect for prototyping responsive designs, creating complex layouts, and understanding the powerful capabilities of flexbox. Experiment with different configurations to create navigation menus, card layouts, form structures, and responsive component designs without writing any code.
Use Cases
- Visualize how different Flexbox properties affect layout behavior across items.
- Experiment with responsive UI structures like navigation bars, card grids, or centered content.
- Learn Flexbox properties interactively in an educational setting.
- Rapidly prototype and export Flexbox-based layouts for front-end projects.
Key Features
Container Property Controls
Adjust flex-direction, justify-content, align-items, wrap, gap, and container height.
Item-Specific Settings
Modify per-item properties like grow, shrink, basis, order, align-self, and dimensions.
Dynamic Item Management
Add or remove flex items to instantly see layout effects.
Live Visual Feedback
See the layout update in real time as you tweak any property.
Export Code
Copy generated HTML and CSS ready for use in your project.
Educational Guidance
Includes labels and explanations to help you understand underlying Flexbox concepts.
Frequently Asked Questions
Yes — it’s completely free and requires no login.
You can control flex-container properties (e.g., flex-direction, justify-content, gap) and per-item properties (e.g., grow, shrink, align-self, order).
Yes — the tool allows dynamic addition and removal of flex items for testing layouts.
Absolutely — changes are reflected instantly in the preview area.
Yes — both HTML and CSS are generated and ready to copy into your project.
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👨💻 About the Developer
Muhammad Abid Rahimi
Professional full-stack developer with expertise in creating high-performance web applications and tools. Specializing in PHP, MySQL, JavaScript, and modern web technologies. Passionate about building user-friendly interfaces and scalable backend systems that deliver exceptional user experiences.