Flexbox Generator
Visually configure CSS Flexbox. Set direction, wrap, justify, align and per-item properties. Copy generated CSS instantly.
.container {
display: flex;
flex-direction: row;
flex-wrap: nowrap;
justify-content: flex-start;
align-items: stretch;
gap: 8px 8px;
height: 200px; /* optional */
}What is Flexbox Generator?
The Flexbox Generator is a visual CSS tool that helps you build and understand CSS Flexbox layouts without memorizing every property. Flexbox is a one-dimensional CSS layout model that distributes space and aligns items along a single axis — either horizontal or vertical — making it one of the most widely used layout tools in modern web development.
With this generator, you control container-level properties such as flex-direction (row or column), flex-wrap (whether items wrap to a new line), justify-content (how items are spaced along the main axis), align-items (how items sit on the cross axis), and align-content (how rows or columns space themselves when wrapping is enabled). You can also configure individual item properties like flex-grow, flex-shrink, flex-basis, align-self, and order for each child element.
The live preview updates instantly as you adjust settings, showing you exactly how browsers will render your layout. This makes the tool valuable for beginners learning how Flexbox works and for experienced developers prototyping layouts quickly. Once satisfied, copy the generated CSS and drop it directly into your stylesheet.
How to Use Flexbox Generator
- Set container properties
Choose flex-direction, flex-wrap, justify-content, align-items and align-content from the control panel.
- Add and configure items
Add child items and set per-item properties like flex-grow, flex-shrink, flex-basis, order and align-self.
- Preview the layout
Watch the live preview update in real time as you adjust any setting on the container or individual items.
- Copy the CSS
Copy the generated CSS for both the container and items, ready to paste into your project stylesheet.
Key Benefits
Every property change reflects immediately in the preview, so you see your layout take shape as you work.
Generated CSS follows best practices and is formatted for readability, ready to use in any project.
Property labels and instant visual feedback make this an excellent learning tool for Flexbox concepts.
Runs entirely in your browser with no installs, accounts, or dependencies needed.
Frequently Asked Questions
'justify-content' controls spacing along the main axis (horizontal in row mode), while 'align-items' controls alignment on the cross axis (vertical in row mode).
Flexbox is best for one-dimensional layouts like navigation bars, toolbars, or card rows. CSS Grid is better for two-dimensional layouts like full page structures.
'flex-grow' defines how much a flex item should grow relative to its siblings when there is remaining space in the container. A value of 1 means it takes an equal share.
Yes. The generated CSS uses standard unprefixed Flexbox properties which are supported in all modern browsers including Chrome, Firefox, Safari, and Edge.