How to Build a Flexbox Layout

Create CSS Flexbox layouts visually. Adjust direction, alignment, wrapping, and gaps with live preview. Generate clean CSS code instantly.

Open Flexbox Generator →

Step-by-Step Guide

1

Set the flex container

Start by choosing the flex direction (row or column), whether items should wrap, and the gap between items. The visual preview updates instantly as you adjust each property.

2

Align and justify items

Use the alignment controls to set justify-content (main axis), align-items (cross axis), and align-content (multi-line). See exactly how center, space-between, stretch, and other values affect your layout.

3

Configure individual items

Click on any flex item to set its flex-grow, flex-shrink, flex-basis, and align-self properties. Add or remove items to match your target layout.

4

Copy the generated CSS

When your layout looks right, copy the clean CSS code. It includes only the flex properties you need — no bloat, no vendor prefixes for modern browsers. Paste directly into your stylesheet.

Try It Now — Free

No signup, no download. Runs entirely in your browser.

Open Flexbox Generator

Frequently Asked Questions

Flexbox vs CSS Grid — which should I use?
Flexbox is best for one-dimensional layouts (a row OR a column). CSS Grid is best for two-dimensional layouts (rows AND columns). Most real layouts use both — Flexbox for components, Grid for page structure.
Do I need vendor prefixes for Flexbox?
No. Flexbox has full support across all modern browsers (Chrome, Firefox, Safari, Edge). Vendor prefixes are only needed if you support IE 10-11, which has less than 0.1% global usage.
What does flex: 1 actually mean?
flex: 1 is shorthand for flex-grow: 1, flex-shrink: 1, flex-basis: 0%. It means the item will grow to fill available space equally with other flex: 1 items.
Related Reference

CSS Flexbox Cheat Sheet

View Cheat Sheet →

More Guides

How to Format JSON Online How to Encode & Decode Base64 How to Generate UUID Online How to Test an API Online