Developer Tools

CSS Flexbox Generator — Build Flex Layouts Visually

Toggle flex-direction, wrap, justify-content, align-items, and alignment visually, then copy the generated CSS into your project. The live preview updates instantly. No upload, no account — runs entirely in your browser.

flex-direction

flex-wrap

justify-content

align-items

align-content

Preview

Generated CSS

.container {
  display: flex;
  justify-content: flex-start;
  align-items: stretch;
  gap: 16px;
}

Frequently Asked Questions

What CSS does this generate?
It outputs display: flex with the flexbox properties you configure. Default values (row direction, nowrap) are omitted to keep the output minimal.
What is the difference between align-items and align-content?
align-items controls how items align on the cross axis within a single line. align-content controls spacing between multiple lines when flex-wrap is enabled.
Is my data sent anywhere?
No. CSS generation happens entirely in your browser. Nothing is sent to a server.