Flexbox CSS Generator
Generate Flexbox CSS code interactively. Configure direction, wrap, justify, align, and gap with live preview. Code never leaves your device — formatting and validation run locally in your browser.
How to Use the Flexbox CSS Generator
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Frequently Asked Questions
What Flexbox properties can I configure?
All major flexbox properties: flex-direction, flex-wrap, justify-content, align-items, align-content, align-self, gap, and individual item grow/shrink/basis values.
Does it show a live preview?
Yes. The generator shows a real-time preview of your flex layout with colored boxes, so you can see exactly how your CSS configuration arranges elements before copying the code.
Can I generate CSS for individual flex items?
Yes. Select any item in the preview to set its individual align-self, order, flex-grow, flex-shrink, and flex-basis properties independently from the container.
What browsers support flexbox?
All modern browsers (Chrome, Firefox, Safari, Edge) fully support flexbox. For legacy IE11 support, the generator can output fallback syntax where needed.
Is the generated CSS production-ready?
Yes. The output is clean, standard CSS that you can copy directly into your stylesheets. No vendor prefixes are needed for modern browsers.
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Last updated October 2026