Flexbox Playground
12 toolsVisually build a CSS flexbox layout.
Runs in your browser — your files and text stay on your device
Build a CSS flexbox layout visually and copy the code. Change direction, alignment, wrapping and gap and see how the items respond, which is easier than guessing between justify-content and align-items. It runs in your browser.
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display: flex; flex-direction: row; justify-content: flex-start; align-items: stretch; flex-wrap: nowrap; gap: 12px;
How to use this tool
- 1Adjust direction, justify-content, align-items, wrap, and gap using the controls.
- 2Watch the numbered boxes rearrange live in the preview.
- 3Copy the generated flexbox CSS for your container element.
Frequently asked questions
What's the difference between justify-content and align-items?
justify-content controls spacing along the main axis (horizontal for row, vertical for column); align-items controls alignment along the cross axis (perpendicular to the main axis).
Is this generated on a server?
No — the preview and CSS are computed entirely in your browser.