Free CSS Flexbox Generator
Generate CSS flexbox layouts visually. Configure container and item properties and copy the complete CSS instantly.
Free, no signup — set container properties, add and configure flex items, then click Generate to get your complete flexbox CSS.
Container Properties
Flex Items (3)
Editing is a pain in the ass, right?
That's why we're building Cubix. No more editing hell.
AI Video Editor
Drop your footage, tell it what you want. Cubix cuts, captions, color grades, and exports — fully on its own. No timeline. No manual work. Just results.
Cinematic Screen Recorder
Hit record on Windows. Auto-zoom, cinematic backgrounds, and studio-quality audio kick in automatically — your screen recording looks edited before you've touched a thing.
How to Build a Flexbox Layout
Go from blank container to copy-ready CSS in three steps.
Configure the Container
Set flex-direction, wrap, justify-content, align-items, align-content, and gap.
Add & Tune Items
Add flex items and adjust each one's grow, shrink, basis, align-self, and order.
Copy the Complete CSS
Grab the full container and item CSS from the live preview, ready to paste in.
display:flex; justify-content:center; gap:12px;
Container Properties
Configure all container-level properties: flex-direction, flex-wrap, justify-content, align-items, align-content, gap, width, and height.
Item Control
Add multiple flex items and configure each one's flex-grow, flex-shrink, flex-basis, align-self, and order properties independently.
Complete CSS Output
Get the full CSS including the container and all item classes, ready to paste directly into your stylesheet.
Frequently Asked Questions
What is CSS Flexbox?
CSS Flexbox (Flexible Box Layout) is a one-dimensional layout model that distributes space and aligns items within a container. It's ideal for navigation bars, card grids, and centering content.
What does flex-grow do?
flex-grow defines how much a flex item should grow relative to others when there's extra space. A value of 1 means it takes an equal share; 2 means it takes twice as much space as items with flex-grow: 1.
When should I use Flexbox vs Grid?
Use Flexbox for one-dimensional layouts (a row or a column). Use CSS Grid for two-dimensional layouts where you need control over both rows and columns simultaneously.
How do I center a div with Flexbox?
Set display: flex on the container, then justify-content: center and align-items: center. Toggle those values here and the live preview centers the items so you can copy the exact CSS.
Is the CSS Flexbox Generator free?
Yes. It is completely free with no signup — configure the container and items, preview the layout, and copy the complete flexbox CSS.
Related CSS & design tools
Generate box shadows, round corners, create gradients, and convert colors.