Flexbox Playground
Visually configure a CSS flexbox container and copy the generated CSS
Flex settings
Live preview
CSS
.flex-container {
display: flex;
flex-direction: row;
justify-content: flex-start;
align-items: stretch;
flex-wrap: nowrap;
gap: 8px;
}Examples
Centered hero section
.flex-container {
display: flex;
flex-direction: row;
justify-content: center;
align-items: center;
flex-wrap: nowrap;
gap: 16px;
}Centers items both horizontally and vertically — the classic pattern for a hero or modal.
Responsive wrapping card gallery
.flex-container {
display: flex;
flex-direction: row;
justify-content: flex-start;
align-items: stretch;
flex-wrap: wrap;
gap: 24px;
}Cards wrap to new rows automatically and all stretch to the same height, ideal for a responsive grid of equal-height cards.
Details
CSS Flexbox is a one-dimensional layout model that makes it easy to align and distribute space among items in a container. This playground lets you tweak all the major flex-container properties — direction, justification, alignment, wrapping, and gap — and see numbered items react in real time. Everything runs locally in your browser; no data is ever sent anywhere.
About this tool
The Flexbox Playground is a visual configuration tool for CSS Flexbox containers. Adjust flex-direction, justify-content, align-items, flex-wrap, and gap through simple dropdowns and a slider, then watch numbered items react in the live preview — all without writing a single line of CSS by hand.
The generated output is a complete, production-ready .flex-container { display: flex; … } rule that you can paste straight into any stylesheet. Because all processing happens locally in your browser, no data ever leaves your device.
Whether you are learning how justify-content differs from align-items, prototyping a navigation bar, or debugging a wrapping layout, the Flexbox Playground gives you immediate visual feedback so you can apply Flexbox with confidence.
How to use
Configure your flex container
Use the dropdowns to choose flex-direction, justify-content, align-items, and flex-wrap, and drag the Gap slider. The live preview updates instantly.
Use a preset to get started quickly
Click a preset chip — Centered, Space between nav, Vertical stack, or Wrapping gallery — to load a common pattern, then fine-tune it.
Copy and use the generated CSS
Click Copy CSS to copy the complete .flex-container rule and paste it into your stylesheet.
Flex-container properties at a glance
| Property | Options |
|---|---|
| flex-direction | row · row-reverse · column · column-reverse |
| justify-content | flex-start · center · flex-end · space-between · space-around · space-evenly |
| align-items | stretch · flex-start · center · flex-end · baseline |
| flex-wrap | nowrap · wrap · wrap-reverse |
| gap | 0 – 48 px |
Frequently asked questions
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