CSS Flexbox Generator
Visual CSS Flexbox generator with live preview. Adjust flex properties and get ready-to-use CSS code instantly.
What is CSS Flexbox?
CSS Flexbox is a one-dimensional layout method for arranging items in rows or columns. It provides an efficient way to align, distribute space, and order elements within a container.
How do I use this generator?
Adjust the flex container properties (flex-direction, justify-content, align-items, flex-wrap, gap) and item properties using the controls. The preview updates in real-time and the CSS code is generated automatically.
Can I add or remove flex items?
Yes, use the "Add Item" and "Remove Item" buttons to change the number of flex items in the preview. Each item can have its own flex-grow, flex-shrink, and flex-basis values.
How do I copy the generated CSS?
Click the "Copy CSS" button to copy the generated CSS code to your clipboard. The code includes both container and item styles.
What is the difference between flex container and flex item?
A flex container is the parent element with display: flex applied. Flex items are the direct children of the container. Container properties control the overall layout, while item properties control individual element behavior.
What does justify-content do?
justify-content aligns flex items along the main axis (horizontal by default). Values include flex-start, flex-end, center, space-between, space-around, and space-evenly.
What does align-items do?
align-items aligns flex items along the cross axis (vertical by default). Values include flex-start, flex-end, center, stretch, and baseline.
What is flex-wrap?
flex-wrap controls whether flex items wrap to multiple lines. Values are nowrap (default), wrap, and wrap-reverse.
What is flex-direction?
flex-direction defines the main axis direction. Values are row (default), row-reverse, column, and column-reverse.
Can I use this for responsive layouts?
Yes, Flexbox is excellent for responsive layouts. You can combine flex properties with media queries to create layouts that adapt to different screen sizes.
Is this tool free to use?
Yes, this CSS Flexbox generator is completely free. There are no hidden fees, no registration required, and you can use it unlimited times.
Does it work on mobile devices?
Yes, the generator is fully responsive and works on all devices including smartphones, tablets, laptops, and desktop computers.
What browsers support Flexbox?
Flexbox is supported by all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. It has over 98% global browser support.
Can I save my flexbox configurations?
The generated CSS code can be copied and saved to your own files. While the tool doesn't have a built-in save feature, you can bookmark the page with your current settings.
How to Use CSS Flexbox Generator
Assemble Flexbox layouts visually and get clean CSS instantly. Everything runs locally in your browser, and no data leaves your device.
- Pick a flex-direction such as row, row-reverse, column, or column-reverse.
- Set justify-content to flex-start, center, space-between, space-around, or space-evenly to distribute items along the main axis.
- Choose align-items — stretch, flex-start, flex-end, center, or baseline — to align items on the cross axis.
- Enter a spacing value in gap (px) and toggle flex-wrap with align-content when items should wrap.
- Turn on Show Item Numbers to keep track of each child, then copy the generated CSS.
Once flex-wrap is enabled, free space on the cross axis is governed by align-content rather than align-items — a frequent source of confusion.
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