Flexbox Generator

Flexbox is a one-dimensional CSS layout for arranging items in a row or column. You make a container with display: flex, then place children along the main axis with justify-content, along the cross axis with align-items, set the direction with flex-direction, allow wrapping with flex-wrap, and add spacing with gap. It's the standard way to build nav bars, button groups and centred content.

Make the parent a flex container and set justify-content: center and align-items: center — that centers the child on both axes. This generator lets you pick those values, see the result live, and copy the exact CSS.

justify-content positions items along the main axis (horizontal for row, vertical for column); align-items positions them along the cross axis (perpendicular to the main axis). Switching flex-direction to column swaps which axis each controls — the most common point of confusion this visual tool makes clear.

Yes. Flexbox is supported in every modern browser (Chrome, Edge, Firefox, Safari) on desktop and mobile. The gap property on flex containers is the newest of these but is now widely supported. Everything runs in your browser and nothing is uploaded.