CSS Flexbox Generator

What is CSS Flexbox Generator?

A CSS flexbox generator lets you visually configure flexbox layout properties and generates the exact CSS you need for your flex container and flex items. Flexbox (Flexible Box Layout) is a one-dimensional layout model in CSS that provides an efficient way to arrange, align, and distribute space among items in a container, even when their sizes are dynamic or unknown. It is one of the two main modern CSS layout systems (alongside CSS Grid) and is the go-to solution for aligning elements horizontally or vertically, distributing space between items, creating navigation bars, centering content, and building responsive component layouts. The CSS Flexbox Generator provides interactive controls for all major flex container properties: flex-direction (row, column, row-reverse, column-reverse), justify-content (main axis alignment), align-items (cross-axis alignment), flex-wrap (wrapping behavior), align-content (multi-line alignment), and gap. It also exposes flex item properties: flex-grow, flex-shrink, flex-basis, align-self, and order. A live preview with configurable demo items shows the effect of each property change in real time.

How to Use CSS Flexbox Generator

1. Select flex-direction: row (horizontal) or column (vertical) to set the main axis.
2. Adjust justify-content to control how items are distributed along the main axis.
3. Adjust align-items to control how items are aligned on the cross axis.
4. Toggle flex-wrap to allow items to wrap onto multiple lines when they overflow.
5. Add or remove demo items in the preview to see how your layout handles different item counts.
6. Click Copy CSS to copy the complete flexbox property declarations for both container and items.

Frequently Asked Questions