Free CSS Flexbox Generator — Visual Flexbox Layout Builder

Build flexbox layouts visually. Adjust flex-direction, flex-wrap, justify-content, align-items, gap and see the live preview update in real time. Copy the generated CSS instantly.

Key Features

Visual live preview with colored flex items
Controls for all major flex properties
Adjustable gap, padding, and item count
One-click copy for generated CSS

SimplyUtils vs Competitors

Feature	SimplyUtils	Flexbox Froggy	CSS-Tricks Guide	Flexbox.tech
Live visual preview
CSS code generation
Adjustable gap/padding
Free to use

Frequently Asked Questions

What is flexbox?

CSS Flexbox is a one-dimensional layout method for arranging items in rows or columns. It distributes space efficiently and aligns content, even when sizes are dynamic.

When should I use flexbox vs grid?

Flexbox is best for one-dimensional layouts (a row of buttons, a navigation bar, a card row). CSS Grid is better for two-dimensional layouts (rows AND columns simultaneously).