UtilityKit

40+ fast, free tools. Most run in your browser only; Image & PDF tools upload files to the backend when you run them.

Flexbox Playground

Tune flex-direction, alignment, gap, and item counts while copying container CSS.

About Flexbox Playground

Flexbox Playground demystifies alignment keywords by letting you flip direction, wrapping, justify-content, align-items, and gap while dummy tiles rearrange instantly. Increase or shrink child counts to reproduce navigation bars, toolbars, or stacked forms. Copy succinct `.flex` rules plus optional child hints for onboarding teammates.

Why use Flexbox Playground

  • Escape endless MDN tab hopping during deadlines
  • Capture screenshots for documentation
  • Prototype responsive toolbar wraps

How to use Flexbox Playground

  1. Pick direction and wrap behavior
  2. Adjust justify and align plus gap
  3. Copy CSS reflecting the sandbox

When to use Flexbox Playground

  • Teaching CSS layout
  • Debugging stubborn alignment bugs
  • Designing icon rails

Frequently Asked Questions

Does this cover align-content?

Focus stays on single-line basics; extend manually for multi-line stacks.

Can I emulate gap fallbacks?

Older browsers need margin hacks beyond this playground.

Why dummy tiles?

Neutral boxes highlight spacing without distracting content.

Exports include prefixes?

No, modern flex syntax only.

Runs locally?

Yes.

Related tools