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Design tool

CSS Flexbox Generator

Build responsive Flexbox layouts visually. Configure container alignment, wrapping, gaps, and per-item flex properties, then copy clean CSS, Tailwind classes, or a complete HTML file.

🔒 100% private browser processing

Your layout stays on your device. Xepoca does not upload, store, or analyze the code you generate.

Start with a layout

Apply a preset, then customize every Flexbox property.

Container settings

Flex items

Drag items to change source order.

Selected item

Live preview

Select an item in the preview to edit it.

Flex items

3

Growing

3

Custom order

0

Self aligned

0

Generated code

HTML

<div class="flex-container">
  <div class="flex-item flex-item--item-1">Item 1</div>
  <div class="flex-item flex-item--item-2">Item 2</div>
  <div class="flex-item flex-item--item-3">Item 3</div>
</div>

CSS

.flex-container {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: stretch;
  align-content: stretch;
  column-gap: 16px;
  row-gap: 16px;
}

.flex-item--item-1 {
  flex: 1 1 180px;
}

.flex-item--item-2 {
  flex: 1 1 180px;
}

.flex-item--item-3 {
  flex: 1 1 180px;
}

How CSS Flexbox works

Flexbox lays out children along one main axis. The main axis followsflex-direction, while the cross axis runs perpendicular to it.

Container properties control direction, wrapping, spacing, and group alignment. Item properties control how each child grows, shrinks, starts at a preferred basis, changes visual order, or overrides cross-axis alignment.

The live preview uses the same CSS values shown in the generated output, so changes can be tested before the code is copied into a project.

Flexbox property guide

justify-content

Distributes items and free space along the main axis, which is horizontal for row layouts and vertical for column layouts.

align-items

Sets the default alignment of every item along the cross axis, including stretch, start, center, end, and baseline.

flex-grow and flex-shrink

Control how items share extra space or surrender space when the container becomes smaller than their preferred sizes.

flex-basis

Sets an item's preferred main-axis size before remaining space is distributed through grow and shrink factors.

Related Xepoca design tools

CSS Grid Generator →

Build two-dimensional layouts with tracks, areas, and item spans.

CSS Gradient Generator →

Create linear and radial gradients for Flexbox sections and items.

Color Picker & Converter →

Choose colors and convert between HEX, RGB, and HSL.

Frequently Asked Questions

Is the CSS Flexbox Generator free?+

Yes. You can design layouts, copy generated code, and download complete HTML without creating an account.

Does Xepoca upload my layout or code?+

No. The editor, preview, and code generation run locally in your browser.

When should I use Flexbox instead of CSS Grid?+

Flexbox is ideal for one-dimensional rows or columns, component alignment, navigation, toolbars, card rows, and centering. CSS Grid is usually better when both rows and columns need explicit control.

Why does align-content sometimes do nothing?+

align-content only distributes multiple flex lines along the cross axis. It has no visible effect when wrapping is disabled or the items occupy only one line.

Can I use the generated Tailwind classes directly?+

Yes. The output uses standard utilities and arbitrary-value syntax. Make sure your Tailwind build scans the file containing the generated classes.