Flexbox Generator

Build and visualize CSS flexbox layouts. Adjust container and item properties with real-time preview.

Container Properties

flex-direction

justify-content

align-items

align-content

flex-wrap

gap 12px

Items

Number of items 4

Item width 80px

Item height 80px

Generated CSS

How to Use the Flexbox Generator

This free flexbox generator lets you experiment with every CSS flexbox property and see results in real time. Use the controls on the left to change the container's flex-direction, justify-content, align-items, flex-wrap, and gap. The preview updates instantly so you can see exactly how items are laid out.

What is CSS Flexbox?

Flexbox (Flexible Box Layout) is a one-dimensional layout model in CSS that distributes space among items in a container. It excels at aligning items horizontally or vertically and handling dynamic or unknown sizes. Flexbox is supported in all modern browsers.

Container vs. Item Properties

Flexbox properties fall into two groups: container properties (display: flex, flex-direction, justify-content, align-items, flex-wrap, gap) and item properties (flex-grow, flex-shrink, flex-basis, align-self, order). This generator focuses on container-level layout which covers the most common use cases.

When to Use Flexbox vs. Grid

Use flexbox for one-dimensional layouts (a row or a column) and CSS Grid for two-dimensional layouts (rows and columns simultaneously). Many real-world designs combine both. Try our CSS Grid Generator for grid-based layouts.