CSS layout tool
CSS Flexbox Generator
Build flex layouts visually. Adjust direction, alignment, wrapping, gap, and child properties, then copy clean CSS for your stylesheet.
The editor runs in your browser and does not send layout settings to a server.
Container
3 / 10 items
Child Properties
Click an item in the preview to edit its properties.
Preview
Click an item to select itCSS Output
.flex-container {
display: flex;
flex-direction: row;
justify-content: flex-start;
align-items: stretch;
flex-wrap: nowrap;
gap: 8px;
}Examples
Create nav bars, centered panels, wrapping chips, equal columns, and sticky footer patterns.
Child controls
Tune grow, shrink, basis, order, and align-self per item from the live preview.
Copy output
The CSS panel updates as you edit so the final declaration is ready to paste.
よくある質問
What is this Flexbox generator for?
It helps you test container and child flex properties visually, then copy the generated CSS.
Can I reset the layout?
Yes. Use the reset control in the editor to return to the default row layout with three children.
Is the generated CSS validated?
The tool constrains numeric controls and shows the final CSS immediately. Review custom flex-basis values before production use.
Is my layout data uploaded?
No. Preview, validation, and copy actions run locally in your browser.