CSS Flexbox Generator
Create and customize CSS Flexbox layouts visually. Configure direction, wrap, alignment, gap, and item order with a live preview.
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What is CSS Flexbox?
CSS Flexbox (Flexible Box Layout) is a one-dimensional layout system that distributes space along a single axis. It gives you powerful control over alignment, direction, order, and sizing of elements within a container.
This tool features:
- Real-time preview — See the flex layout update instantly as you adjust controls.
- Full Flexbox control — Configure direction, wrap, alignment, content distribution, and gap.
- Visual item display — Flex items are numbered and color-coded for easy reference.
- Copy HTML & CSS — Export both the HTML structure and CSS code with one click.
CSS Flexbox Properties
| Property | Description | Example |
|---|---|---|
flex-direction |
Defines the main axis direction | row |
flex-wrap |
Controls whether items wrap to a new line | wrap |
justify-content |
Aligns items along the main axis | center |
align-items |
Aligns items along the cross axis | center |
align-content |
Aligns multi-line flex lines along the cross axis | space-between |
gap |
Sets the gap between flex items | 8px |
How to Use
- Set the flex properties — Choose direction, wrap, and alignment options from the dropdowns.
- Customize spacing and sizing — Adjust gap, item count, and item width using the sliders.
- Preview the layout — See how items behave with different flex properties in real time.
- Copy the code — Click Copy HTML or Copy CSS to export your flex layout.
Frequently Asked Questions
What is the difference between justify-content and align-items?
justify-content aligns items along the main axis (horizontal in a row layout), while align-items aligns items along the cross axis (vertical in a row layout). In a column layout, these axes are swapped.
When should I use Flexbox vs Grid?
Use Flexbox for one-dimensional layouts (single row or column). Use CSS Grid for two-dimensional layouts (rows AND columns). Flexbox excels at distributing space and aligning content along a single axis.
Is this tool free to use?
Yes. All processing happens entirely in your browser. No data is sent to any server.