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CSS Flexbox Generator

Generate CSS Flexbox styles from direction, alignment, and gap.

Overview

  • Generates CSS Flexbox styles just by specifying flex-direction, justify-content, align-items, flex-wrap, and gap.
  • Lets you adjust each property's value while checking how the items are arranged on the spot in a preview.
  • Useful for building layouts commonly done with Flexbox, such as navigation bars or a row of cards.

Usage

  1. Choose flex-direction, justify-content, align-items, and flex-wrap from the dropdowns, and enter the gap (px).
  2. Click "Generate CSS".
  3. A preview and the generated CSS (including display: flex) are displayed.

Example

Input

row / space-between / center / wrap / 16px

Output

display: flex; flex-direction: row; justify-content: space-between; ...

Use Cases

  • Quickly generating CSS to arrange elements in a row, such as a navigation bar or toolbar
  • Building a layout that arranges cards or buttons with even spacing while watching the preview
  • Learning the difference in behavior between justify-content and align-items by checking an actual preview

FAQ

Can I also generate a vertical (column) layout?

Yes. Choose "column" or "column-reverse" for flex-direction.

Can I set different flex-grow / flex-shrink values per item?

This tool only generates properties for the container (parent element). If you need flex-grow, flex-shrink, or flex-basis for individual items (child elements), add them to the generated CSS manually.

Does this work in Internet Explorer?

The generated properties (including gap) work in major modern browsers (Chrome, Firefox, Safari, Edge). Internet Explorer is not supported.

Notes

  • The gap can be specified in the range of 0 to 500px.
  • Only container-side properties are generated. If per-item adjustments are needed, edit the generated CSS manually.

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