Flexbox Generator
Build CSS flexbox layouts visually online for free — adjust direction, justify, align, wrap and gap with a live preview, then copy the code.
100% private — runs entirely in your browser. Your files never leave your device.
Adjust the controls and watch the layout update live, then copy the CSS for your .container.
Add or remove items to see how alignment and wrapping behave. Runs entirely in your browser.
How to use the Flexbox Generator
- Adjust flex-direction, justify, align, wrap and gap.
- Add or remove items to test the layout.
- Watch the live preview respond.
- Copy the CSS for your container.
What you can use it for
- Prototype a flexbox layout visually
- Learn how flex properties interact
- Grab ready CSS for a component
- Test alignment and wrapping behaviour
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Frequently asked questions
What does this generate?
The CSS for a flex container — display, flex-direction, justify-content, align-items, flex-wrap and gap — which you copy onto your own .container.
What's the difference between justify-content and align-items?
justify-content aligns items along the main axis (the flex-direction); align-items aligns them along the cross axis. Add items to see both in action.
Can I see how wrapping works?
Yes — add several items and set flex-wrap to 'wrap' to watch them flow onto new lines.
Is it free and private?
Yes — free, no signup, and it runs entirely in your browser.