CSS Flexbox Generator
Build a flex container visually. Set direction, alignment and gap — watch items rearrange in real time. The most-used CSS flex generator online.
CSS generated is free to use — no attribution required.
How do you use the CSS flex generator?
Click the direction arrows to set flex-direction. The visual buttons for justify-content and align-items show you a miniature layout so you can pick the right value at a glance. The colored numbered boxes in the preview reflect your settings live.
What are the CSS flexbox properties?
flex-direction sets the main axis (row = horizontal, column = vertical). justify-content controls spacing along the main axis. align-items controls alignment on the cross axis. flex-wrap determines whether items wrap to new lines. gap sets spacing between items without needing margins.
What are the flex-direction values?
row (default, left to right), row-reverse (right to left), column (top to bottom), column-reverse (bottom to top).
What are the justify-content values in CSS Flexbox?
flex-start, center, flex-end, space-between (equal gaps between items), space-around (equal space around items), space-evenly (equal space everywhere).
What is the browser compatibility for CSS Flexbox?
CSS Flexbox is supported in all modern browsers at 99%+. No vendor prefixes are required in modern codebases. The old display: box syntax from 2009 is obsolete.