CSS Flexbox Generator

Generate CSS flexbox layouts visually with live preview. Customize direction, wrapping, alignment, gap, and individual item properties.

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Container Properties

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Click on an item in the preview to edit its individual flex properties.

.container {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: flex-start;
  align-items: stretch;
  gap: 8px;
}
All layout generation happens in your browser. No data is sent to any server.

How to Use This Tool

  1. 1

    Set container properties

    Choose flex-direction, flex-wrap, justify-content, align-items, and gap to control the overall layout.

  2. 2

    Adjust the number of items

    Set how many flex items to display (1-12) and customize the container height and background color.

  3. 3

    Edit individual items

    Click on any item in the preview to set its flex-grow, flex-shrink, flex-basis, order, and align-self properties.

  4. 4

    Copy the CSS

    The generated CSS updates in real-time. Click Copy to copy the complete flexbox CSS to your clipboard.

Frequently Asked Questions

What is CSS Flexbox?
CSS Flexbox (Flexible Box Layout) is a one-dimensional layout model for distributing space among items in a container. It makes it easy to align and distribute items along a row or column.
When should I use Flexbox vs Grid?
Use Flexbox for one-dimensional layouts (a single row or column). Use CSS Grid for two-dimensional layouts (rows and columns together). Flexbox is great for navigation bars, card rows, and centering content.
What does flex-grow do?
flex-grow controls how much an item grows relative to other items when there is extra space. A value of 0 means no growth, 1 means it takes equal share of remaining space.
Is my data secure?
Yes. All layout generation happens entirely in your browser using JavaScript. No data is sent to any server.