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Free CSS Tool

Flexbox Generator

Build flexbox layouts visually: tweak the container and individual items with live preview, then copy clean production CSS.

100% Free No signup Runs in your browser No uploads

Container

Items

EDIT ITEM

Live preview

Generated CSS

Frequently asked questions

How do I edit a single flex item?

Use the Selected dropdown in the Items panel to pick an item, then adjust its flex-grow, shrink, basis, order or align-self. The preview highlights the active item.

Does the generated CSS include item classes?

Yes. The container rule is always included, and any item with non-default settings gets its own .flex-item-N class with just the changed properties.

What does the gap slider do?

It sets the gap property, the modern way to space flex items evenly without margin hacks on each child.

Preview

Flexbox Generator tool preview
Live preview of the Flexbox Generator tool running in your browser. Your data never leaves your device.

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