CSS Flexbox Generator
Free tool No sign-up
About this generator
Build CSS flexbox layouts visually — control direction, wrapping, alignment, and gap, then copy the output.
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How to use
01
Set flex-direction
Choose row or column to set the main axis. Reverse variants flip the order of items without touching the HTML.
02
Toggle flex-wrap
nowrap keeps all items on one line. wrap lets items spill to a new line when they run out of space.
03
Justify along the main axis
justify-content controls how items are distributed along the main axis — start, center, end, or space options.
04
Align on the cross axis
align-items positions items on the perpendicular axis. stretch fills the container; baseline aligns text baselines.
05
Adjust gap
The gap property sets space between flex items on both axes — cleaner than using margins on individual items.
06
Copy the CSS
Hit "Copy CSS" to grab the full property block and paste it straight into your stylesheet.
CSS Flexbox syntax
| Property | Description |
|---|---|
flex-direction | Defines the main axis: row (default) | column | row-reverse | column-reverse. |
flex-wrap | Controls whether items wrap to new lines: nowrap | wrap | wrap-reverse. |
justify-content | Aligns items along the main axis: flex-start | center | flex-end | space-between | space-around | space-evenly. |
align-items | Aligns items on the cross axis for a single line: stretch | flex-start | center | flex-end | baseline. |
align-content | Aligns wrapped lines on the cross axis (only applies when flex-wrap is enabled). |
gap | Sets spacing between flex items. Shorthand for row-gap and column-gap. |
Flexbox snippets
Basic
display: flex;
Center
display: flex; justify-content: center; align-items: center;
Layout
display: flex; flex-direction: row; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 16px;
Browser support
flexbox has excellent browser support — safe to use in production without any fallback or prefix (IE 11 has partial support).
Chrome v29+
Firefox v28+
Safari v9+
Edge v12+
IE v11+
See it used in real designs
Browse hand-coded collections that put this tool to work.
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