ZenovayTools

CSS Flexbox Playground

Learn and generate CSS Flexbox layouts visually. Adjust direction, alignment, wrapping, and gap in real time.

Preview
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2
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12px
CSS
display: flex;
flex-direction: row;
justify-content: flex-start;
align-items: stretch;
flex-wrap: nowrap;
gap: 12px;

How to Use CSS Flexbox Playground

  1. 1Add flex items to the container using the "Add Item" button.
  2. 2Set flex-direction, justify-content, and align-items using the controls.
  3. 3Adjust flex-wrap and gap to fine-tune the layout.
  4. 4See the layout update in real time in the preview area.
  5. 5Copy the generated CSS Flexbox code.
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Frequently Asked Questions

What is CSS Flexbox?▾
Flexbox (Flexible Box Layout) is a CSS layout model designed for one-dimensional layouts. It makes it easy to align and distribute space among items in a container, even when sizes are unknown.
What is the difference between justify-content and align-items?▾
justify-content controls alignment along the main axis (horizontal for row, vertical for column). align-items controls alignment along the cross axis (perpendicular to the main axis).
When should I use Flexbox vs Grid?▾
Use Flexbox for one-dimensional layouts (a row or a column of items). Use CSS Grid for two-dimensional layouts (rows AND columns). Flexbox is great for navbars, card rows, and centering content.
What does flex-wrap do?▾
By default, flex items try to fit on one line. flex-wrap: wrap allows items to wrap onto multiple lines if they don't fit, creating a responsive layout.
Can I use this tool on my phone?▾
Yes, the flexbox generator works in any modern mobile browser. Experiment with layout options and copy the CSS on any device.
Does the generated CSS include the HTML structure?▾
Yes. The tool generates both the CSS for the flex container and a matching HTML template, so you can copy-paste a complete working layout into your project.
Can I adjust the number of flex items?▾
Yes. Use the plus and minus buttons to add or remove child items in the preview. This helps you visualize how different flexbox settings behave with varying numbers of elements.