Free CSS Flexbox Generator

Build a CSS flexbox layout visually and copy production-ready CSS, HTML, React JSX, or Tailwind classes — no sign-up, works offline.

Presets

Container

Display
Flex Direction
Flex Wrap
Justify Content main axis

Centers items along the main axis.

Align Items cross axis

Stretches items to fill the cross axis.

Align Content cross axis

Packs wrapped rows together on the cross axis.

Build flexbox layouts without memorizing syntax

This free flexbox generator turns CSS flexbox properties into on-screen controls. Adjust flex-direction, justify-content, and align-items with clicks instead of trial and error, then copy clean CSS, semantic HTML, React JSX, or Tailwind CSS classes — ready to paste into any project.

What is CSS Flexbox?

CSS Flexbox (Flexible Box Layout) is a one-dimensional CSS layout system that allows developers to align, distribute, and organize elements efficiently. Instead of manually using floats or positioning, Flexbox automatically manages spacing and alignment across different screen sizes.

Why use flexbox layout

  • Aligns and distributes space among items automatically, even at unknown sizes.
  • Replaces old float and table-based CSS layout hacks.
  • Handles responsive design with far less custom breakpoint code.
  • Reorders content visually with order, without touching the HTML.
  • Pairs naturally with CSS Grid for full-page layout systems.

How to Use the CSS Flexbox Generator

Getting started takes less than a minute.

  • Choose display: flex for your container.
  • Select the layout direction (row or column).
  • Adjust horizontal and vertical alignment.
  • Configure wrapping and spacing between items.
  • Preview the layout instantly.
  • Copy the generated CSS.
  • Paste it directly into your project.

Best Practices for Responsive Flexbox Layouts

Responsive layouts are essential for creating websites that look great on desktops, tablets, and mobile devices. CSS Flexbox makes it easier to align and distribute content, but following a few best practices will help you build layouts that are cleaner, easier to maintain, and more adaptable across different screen sizes.

  • Keep containers simple and avoid unnecessary nesting.
  • Use the gap property instead of margins where possible.
  • Enable flex-wrap for layouts that should adapt to smaller screens.
  • Test your design on mobile, tablet, and desktop devices.
  • Combine Flexbox with media queries for the best responsive experience.

Common flexbox layout examples

Centered content

justify-content: center; align-items: center; centers a child both horizontally and vertically.

Responsive navbar

justify-content: space-between; pins a logo left and nav links right.

Equal-height cards

align-items: stretch; makes sibling cards match height automatically.

Wrapping gallery

flex-wrap: wrap; plus a gap value builds a responsive image grid.

Frequently Asked Questions

It generates CSS flexbox code from a visual layout you build with clicks — no manual syntax required. Copy the CSS, HTML, React JSX, or Tailwind output.
Yes. The output is plain, unminified CSS using standard flexbox properties, so it works in any project without extra dependencies.
No. align-content only affects layout when flex-wrap is set to wrap or wrap-reverse, because it aligns multiple wrapped rows, not single items.
Yes. The React JSX tab outputs the same layout as inline-styled JSX you can paste directly into a component.
Yes. It is built with plain HTML, CSS, and vanilla JavaScript with no external libraries or network requests.
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