Developer Tools

CSS Flexbox Generator

A highly interactive, visual CSS Flexbox Generator. Stop guessing flex properties and build complex, responsive CSS flex layouts in seconds. Easily adjust flex-direction, justify-content, align-items, and edit individual item properties like flex-grow and flex-basis. Automatically generates clean, standard-compliant CSS and HTML code ready to be pasted into your project.

Container Settings

Item Properties

Click an item in the preview to edit its properties.

Presets

Live Preview
CSS
HTML

What is the CSS Flexbox Generator?

The CSS Flexbox Generator provides a visual playground to design and build flex layouts without having to memorize properties like `justify-content` or `flex-wrap`.

How to Use

  1. Use the controls on the left to set the main container properties like Direction, Wrap, and Gap.
  2. Toggle Justify and Align settings to position your items perfectly.
  3. Click on any colored flex item in the preview to open its properties, where you can make it grow, shrink, or reorder it.
  4. Use the presets to quickly load common patterns like Navbars or Hero sections.
  5. Copy the automatically generated CSS and HTML at the bottom of the screen.

Common Use Cases

  • Prototyping responsive navigation bars and footers.
  • Building equal-height card layouts and sidebars.
  • Visually testing flex-basis vs flex-grow behaviors.

Key Benefits

  • Saves time by generating standard boilerplate HTML and CSS.
  • Helps beginners intuitively understand the Flexbox layout model.
  • Provides instant visual feedback across simulated container resizes.

Frequently Asked Questions

How do I change flex-grow or flex-basis for a specific item?

Simply click on any flex item in the live preview. A properties panel will appear where you can adjust its specific order, flex-grow, flex-shrink, flex-basis, and align-self values.

What is the difference between justify-content and align-items?

`justify-content` aligns items along the main axis (horizontal by default), while `align-items` aligns them along the cross axis (vertical by default). Our visual generator lets you instantly see the difference when you toggle them.

Is this tool completely free?

Yes! The CSS Flexbox Generator runs entirely in your web browser, meaning it is lightning fast, 100% free, and completely private.

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