Flexbox Generator
Build CSS Flexbox layouts visually and export code
CSS Flexbox Generator lets you set direction, justification, alignment, wrapping and gap, then outputs the exact display: flex rule and its related properties ready to paste into your stylesheet — no need to memorize which property controls which axis.
How to use Flexbox Generator
- 1
Choose a flex direction (row, column, or reversed).
- 2
Set justify-content and align-items to position items.
- 3
Choose whether items wrap, and set the gap between them.
- 4
Copy the generated CSS.
Everything you need to know about Flexbox
What is Flexbox for?
Flexbox arranges items along a single row or column and distributes space between them — the right tool for aligning a navbar's links, centering content, or spacing out a row of buttons, where CSS Grid's two-dimensional layout would be more than you need.
When you actually need this
- Navigation bars, spacing links evenly or pushing some to one side.
- Centering content vertically and horizontally without the old hacks that used to require.
- Equal-width columns that need to resize proportionally with the container.
Flexbox vs. Grid
Flexbox handles one-dimensional layouts (a single row or column); Grid Generator handles two-dimensional layouts (rows *and* columns together). If you're laying out an entire page structure, Grid is usually the better starting point; for aligning items within one section, Flexbox is usually simpler.
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Frequently Asked Questions
What's the difference between justify-content and align-items?
justify-content positions items along the main axis (horizontally for a row, vertically for a column), while align-items positions them along the cross axis (the opposite direction). Switching direction swaps which one controls which visual axis.
Why would I use row-reverse or column-reverse instead of changing my HTML order?
Reversing the direction flips the visual order without touching your markup, which keeps the DOM order (important for accessibility and tab order) separate from the visual order.
Do I need anything besides this CSS to make the layout work?
Just apply display: flex (included in the generated code) to the container; its direct children become flex items automatically with no extra markup needed.
Does this tool send anything to a server?
No — the CSS is generated entirely in your browser; nothing you enter is transmitted or stored.
Is this tool free to use?
Yes — completely free, with no signup required.