CSS Flexbox Playground

Flexbox Properties

Live Preview

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Generated CSS

.container {
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: stretch;
  flex-wrap: nowrap;
  align-content: stretch;
  gap: 10px;
}

What is CSS Flexbox Playground?

CSS Flexbox Playground is an essential tool for frontend developers — visually preview and adjust all Flexbox properties in real time. Supports instant adjustment of flex-direction, justify-content, align-items, flex-wrap, align-content, gap, and more. See layout changes immediately and auto-generate the corresponding CSS code. Stop guessing and master Flexbox layout quickly.

▶Use Cases5 scenarios
  • ◆Learning CSS Flexbox
  • ◆Debugging flex layouts
  • ◆Rapid prototyping
  • ◆Generating flex CSS code
  • ◆Teaching demonstrations
▶How to Use5 steps
  1. 1Choose flex-direction
  2. 2Adjust justify-content and align-items
  3. 3Set flex-wrap and gap
  4. 4See the live preview
  5. 5Copy the generated CSS code
▶Features6 features
  • ✓All flex properties visualized
  • ✓Real-time preview
  • ✓Auto-generated CSS code
  • ✓One-click code copy
  • ✓Adjustable item count
  • ✓Responsive design
▶FAQ5 questions
What is CSS Flexbox Playground?

An online Online CSS Flexbox visualization tool. Real-time preview and adjustment of flex layout properties with auto-generated CSS code.. Everything runs locally in your browser — no uploads.

What is CSS Flexbox?

Flexbox is a CSS3 layout mode that provides an efficient way to lay out, align, and distribute space among items in a container. Enable it with display: flex for easy centering, equal spacing, and adaptive arrangements.

What is the difference between justify-content and align-items?

justify-content controls alignment along the main axis (horizontal by default); align-items controls alignment along the cross axis (vertical by default).

What does flex-wrap do?

It controls whether items wrap to new lines. Default nowrap keeps everything on one line; wrap allows wrapping; wrap-reverse wraps in reverse order.

Can I use the generated code directly?

Yes. The generated CSS is standard syntax that you can copy directly into your project.