Flexbox Generator
Build CSS Flexbox layouts visually. Adjust direction, alignment, wrapping, and gap then copy the CSS code.
Last reviewed by the Radiatus Cloud team
Flexbox Generator
Visually build CSS Flexbox layouts.
Container Properties
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Configure a Flexbox layout and copy the CSS
Flexbox aligns and distributes items along a single direction, and its behaviour is far easier to set correctly by sight than by guessing at property names and hoping. This generator lets you adjust direction, alignment, wrapping and gap through visual controls and gives you the exact CSS for the layout you build, so a fiddly, interaction-heavy task becomes a matter of a few clicks. You see the result form as you go rather than editing blind.
The controls that shape a flex layout
A flex layout is fully defined by a handful of decisions: which direction the items flow, how they align both along that direction and across it, whether they wrap onto new lines when space runs out, and how much gap sits between them. Each decision maps to a property, and it is the interactions between those properties that make Flexbox genuinely tricky to reason about in your head. Setting them visually and reading off the finished result removes the trial and error that otherwise eats time.
Standard CSS you can paste
It runs entirely in your browser, so nothing you enter is uploaded and the generated code is yours to paste straight into a project. Because it works client-side, you can iterate freely, regenerating as often as you like without a round trip to any server.
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Frequently Asked Questions
What can I control?
Flex direction, alignment along and across the main axis, wrapping, and the gap between items, the core decisions that define a flex layout.
Why build it visually?
Because Flexbox properties interact in ways that are hard to predict from names. Adjusting visually and reading the CSS removes the guesswork.
What is the gap property?
The spacing between flex items, set once rather than with margins on each item, which keeps the layout clean and consistent.
Is the output standard CSS?
Yes. It produces ordinary Flexbox CSS, supported by all current browsers, ready to paste in.
Is my layout uploaded?
No. The generator runs entirely in your browser.
Privacy & Security
Runs locally in browser.
About This Tool
This tool runs entirely in your browser. No data is sent to any server, ensuring complete privacy. Simply use the interface above to get started — no registration or login required.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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DesignConvert colours between HEX, RGB, HSL, HWB and OKLCH, with alpha support. Runs in your browser and shows the live swatch for each format.
Accessibility Color Contrast Checker
DesignCheck foreground and background colour contrast against WCAG thresholds, with the rules for text size, UI components and states.
Typography Scale Generator
DesignGenerate a modular type scale from a base size and ratio, with fluid clamp() values for responsive layouts.