Flexbox Generator

Visually build CSS Flexbox layouts.

flex-direction

flex-wrap

justify-content

align-items

align-content

gap

Number of items: 5

Live Preview

Generated CSS

.container {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
  align-content: flex-start;
  gap: 8px;
}

About This Tool

The CSS Flexbox Generator lets you visually configure a flex container by adjusting all major flexbox properties — flex-direction, flex-wrap, justify-content, align-items, and align-content. The live preview updates instantly as you change settings, so you can see exactly how your layout will behave before writing any code.

Flexbox is a CSS layout module designed for one-dimensional layouts (rows or columns). Understanding how each property interacts is crucial for building responsive UIs. This tool lets you experiment without writing boilerplate and copy the generated CSS directly into your project.

How to Use

Adjust flex-direction to control the main axis (row or column).
Set flex-wrap to control whether items wrap to the next line.
Use justify-content to distribute items along the main axis.
Use align-items to align items along the cross axis.
Change the number of preview items using the slider to see wrapping behavior.
Click Copy to copy the generated CSS to your clipboard.

Use Cases

Front-end developers use this tool to quickly prototype navigation bars, card grids, and toolbar layouts without memorizing every flexbox property combination. CSS beginners use it to visually learn how flexbox properties interact. Designers use it to verify that a layout concept is achievable in CSS before handing it off to developers. Code reviewers use it to reproduce and compare layout behavior during bug investigations.

FAQ

What is the difference between align-items and align-content? — align-items aligns items within a single line; align-content only applies when there are multiple lines (flex-wrap is set to wrap).
Does flexbox work for two-dimensional layouts? — Flexbox is one-dimensional. For complex grid layouts, use CSS Grid (see our Grid Generator).
Is flexbox supported in all browsers? — Yes. Flexbox has full support in all modern browsers including Chrome, Firefox, Safari, and Edge.