Free Flexbox Playground
This playground makes flexbox concrete: change direction, justification, alignment, wrapping and gap, and watch six boxes respond instantly. It is designed for headers, nav rows, card footers and any single-axis layout. Copy the CSS when it looks right. Nothing is uploaded.
How it works
Direction sets the main axis; justification distributes along it; alignment positions across it; gap spaces items without margin hacks. The preview applies the identical declaration block shown in the output, so copied code reproduces the preview exactly.
Example
| Goal | Settings |
|---|---|
| Centred hero content | column, center, center |
Frequently asked questions
What is the main axis?
The direction items flow: horizontal for row, vertical for column. Justify works along it, align across it.
Why space-between vs space-around?
Between pushes first and last items to the edges; around gives every item equal space on both sides.
When does wrap matter?
With wrapping on, items flow to new lines instead of shrinking past their content on narrow screens.
Why are my items stretched?
Align-items defaults to stretch, filling the cross axis. Switch to flex-start or center to hug content.
Is anything uploaded?
No. Everything renders locally in your browser.
Related tools
- CSS Grid Generator , two-dimensional layouts.
- CSS Button Generator , buttons inside flex rows.
- HTML Layout Generator , full shells.
- Guide: Small Business Digital Toolkit