πŸ“ CSS Flexbox Playground

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Updated: 2026-07-11

Container Properties

Selected Item Properties

Click an item in the preview to edit its properties

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CSS Code

How to Use the CSS Flexbox Playground

Using the CSS Flexbox Playground is simple. Follow these three steps:

  1. Enter Your Input
    Type, paste, or upload your content into the input area on the tool page. The tool supports standard input formats and all processing happens locally in your browser.
  2. Configure and Process
    Adjust any available settings to customize the output, then click the main action button to process your content. Results appear instantly with no server delays.
  3. Copy or Download Results
    Use the "Copy" button to copy the result to your clipboard, or "Download" to save it as a file. Your data never leaves your device.

FAQ

What is Flexbox?

Flexbox (Flexible Box Layout) is a CSS3 layout mode designed for aligning and distributing space within a container, even when item sizes are unknown or dynamic. It simplifies complex layout implementations.

What is the difference between flex-grow, flex-shrink, and flex-basis?

flex-grow defines how items grow (how extra space is distributed), flex-shrink defines how items shrink (when space is insufficient), and flex-basis defines the initial size. Shorthand: flex: grow shrink basis.

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

justify-content controls alignment along the main axis, while align-items controls alignment along the cross axis. The main axis direction is determined by flex-direction.

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