CSS Flexbox & Grid Generator
Build a layout visually and copy the CSS — with a live preview.
Preview
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CSS
.container {
display: flex;
flex-wrap: wrap;
gap: 12px;
}About Flexbox & Grid Generator
A CSS flexbox generator lets you build a layout by clicking instead of guessing. Pick flex-direction, justify-content, align-items, wrapping, and gap — or switch to Grid and set columns and rows — and the preview updates as you go, so you can see exactly what each property does. The generated CSS only includes the properties you actually changed, so you can paste it straight into your stylesheet.
Frequently asked questions
- What's the difference between justify-content and align-items?
- justify-content moves items along the main axis — left to right in a row, top to bottom in a column. align-items moves them along the cross axis, at a right angle to that. Switch flex-direction in the preview and you'll see the two swap places.
- Should I use flexbox or grid?
- Flexbox is for one direction — a row of buttons, a nav bar, a centered box. Grid is for two directions at once — rows and columns together, like a page layout or card gallery. It's normal to use both, with grid for the page and flexbox inside each part.
- How do I center a div?
- Set display: flex, justify-content: center, and align-items: center on the parent. Pick those in the generator and the preview shows it immediately. With grid, place-items: center does the same job.
- Why doesn't the CSS list every property?
- Properties you haven't changed already match the browser default, so writing them out adds nothing. The generator only outputs what actually differs — cleaner CSS that's easier to read and review.
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