Design

CSS Flexbox Generator

Visual flexbox layout builder with live preview and CSS code output

Container Properties

flex-direction

justify-content

align-items

flex-wrap

Gap

gap (row + column)

8px

Container Dimensions

Width

100%

Height

320px

Live PreviewAnimate

direction:rowjustify:flex-startalign:stretchwrap:nowraprow-gap:8px

CSS

.container {
  display: flex;
  gap: 8px;
}

HTML

<div class="container">
  <div>Item 1</div>
  <div>Item 2</div>
  <div>Item 3</div>
</div>

Flexbox Cheat Sheet

Container Properties

flex-direction - main axis direction

justify-content - main axis alignment

align-items - cross axis alignment

flex-wrap - allow line wrapping

align-content - multi-line cross axis

gap - space between items

Item Properties

flex-grow - ability to grow

flex-shrink - ability to shrink

flex-basis - initial main size

align-self - override cross alignment

order - visual order override

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What is CSS Flexbox Generator?

Flexbox generator to build CSS flexbox layouts visually with a live preview and copy-ready CSS code output.

Set flex direction, justify-content, align-items, gap, wrap, and more using intuitive controls while watching the layout update in real time. Add, remove, and resize flex items to see exactly how different flexbox properties affect your layout. Copy the generated CSS code directly into your project. Whether you are learning flexbox for the first time or prototyping a navigation bar, card layout, or centering solution, this tool lets you experiment without writing CSS by hand. Everything runs in your browser - no signup, no installation, no dependencies required.

How to Use CSS Flexbox Generator

1Set the container flex properties using the visual controls - choose flex-direction, justify-content, align-items, flex-wrap, and gap values
2Add or remove flex items using the + and - buttons to see how multiple items behave in the layout
3Adjust individual item properties like flex-grow, flex-shrink, and flex-basis to control how each item sizes itself
4Preview the layout in the live preview panel, then copy the generated CSS code directly into your project

Frequently Asked Questions

What is CSS Flexbox?

CSS Flexbox (Flexible Box Layout) is a CSS layout model that makes it easy to align and distribute space among items in a container. It works in one dimension - either as a row or a column - and handles dynamic sizing, spacing, and alignment without floats or positioning hacks.

How does this flexbox generator work?

Use the visual controls to set container properties like flex-direction, justify-content, align-items, flex-wrap, and gap. Add or remove child items and adjust their individual flex-grow, flex-shrink, and flex-basis values. The live preview updates instantly and the generated CSS is ready to copy into your project.

Can I use the generated code in production?

Yes. The generator outputs clean, standards-compliant CSS that works in all modern browsers. Flexbox has over 99% browser support globally, so the generated code is safe for production use without any vendor prefixes.

What is the difference between Flexbox and Grid?

Flexbox is one-dimensional - it works in a single row or column. CSS Grid is two-dimensional - it works in rows and columns simultaneously. Use Flexbox for component-level layouts (navbars, cards, centering) and Grid for page-level layouts (full-page grids, dashboards).

Can I use this to learn flexbox?

Yes. The visual preview updates in real time as you change properties, so you can see exactly what each flexbox property does. Try changing flex-direction from row to column, or experiment with justify-content values to understand how items are distributed along the main axis.

How do I center a div with flexbox?

Set justify-content to 'center' and align-items to 'center' on the container. This centers child elements both horizontally and vertically. You can do this in the generator with two clicks and copy the resulting CSS code.

Does this tool generate responsive flexbox code?

The generator outputs the core flexbox CSS properties. Flexbox is inherently responsive - items wrap and resize based on available space when you enable flex-wrap. You can add your own media queries to the generated code for breakpoint-specific adjustments.

Do I need to install anything to use this?

No. The tool runs entirely in your browser. There is nothing to install, no account to create, and no signup required. Just open the page and start building your flexbox layout visually.

How do I build a responsive navbar with flexbox?

Set flex-direction to row, justify-content to space-between to push the logo and links apart, and align-items to center for vertical alignment. Enable flex-wrap so items stack on small screens, then copy the CSS and add a media query if you want a different layout below a breakpoint.

What does flex-grow, flex-shrink, and flex-basis do?

flex-basis sets an item's starting size before free space is distributed. flex-grow controls how much an item expands to fill extra space, and flex-shrink controls how much it shrinks when space is tight. Adjust each item's values in the generator and watch the preview to see the effect.

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Keep reading: Git Cheat Sheet and http status codes reference. Doing this in code instead? See the utility endpoints.