CSS Flexbox Generator & Visual Playground

Interactively configure flexible box layouts, test main and cross-axis alignments, and generate production-ready CSS and Tailwind code in your browser.

At a glance

CSS Flexbox Generator & Visual Playground is a free browser tool that visually designs CSS Flexbox layouts with real-time controls. All layout modeling and styling code executes purely in client memory. It also generates both clean indented vanilla CSS and idiomatic Tailwind CSS classes. Your inputs never leave your device, and there is no sign-up or install.

CSS Suite: CSS Flexbox CSS Grid CSS Animation PX to REM Contrast Checker

100% In-Browser CSS Flexbox Generator & Visual Playground

Interactively test flex direction, alignment, gap, and item sizing with instant visual preview. Exports clean vanilla CSS and Tailwind classes.

Client-Side Only Tailwind + Vanilla

Layout Presets:

Container Properties

display: flex

flex-direction (main axis flow)

flex-wrap (multi-line wrapping)

justify-content (main-axis alignment)

align-items (cross-axis item alignment)

align-content (multi-line cross-axis)

gap (item spacing) 16px

0px 16px 32px 48px 64px

Item Inspector

Items:

Select Item to Custom-Style:

Item 1 Settings Default

flex-grow

flex-shrink

flex-basis

order

align-self

Live Visual Canvas

Click an item to inspect its flex attributes Viewport: 100%

Why Use This CSS Flexbox Generator & Visual Playground?

100% In-Browser Privacy: All layout modeling and styling code executes purely in client memory.

Dual Code Generation: Generates both clean indented vanilla CSS and idiomatic Tailwind CSS classes.

Interactive Item Inspector: Click individual child items to customize flex-grow, shrink, basis, and align-self.

Production Layout Presets: Instant one-click presets for navbars, centered cards, grids, and sidebar splits.

How to Use CSS Flexbox Generator & Visual Playground

Select a Preset or Adjust Container

Choose a layout preset or configure flex-direction, flex-wrap, justify-content, and align-items.

Customize Spacing & Items

Use the gap slider to adjust spacing and click individual child items to set flex-grow, basis, or alignment overrides.

Copy CSS or Tailwind Code

Switch between Vanilla CSS, Tailwind CSS, or HTML tabs and click Copy Code to paste directly into your project.

Responsive Navigation Bar Layout

Generates a flexible navigation container that spreads brand logo, menu links, and user action buttons with centered vertical alignment.

Flex Configuration Source

direction: row, justify: space-between, align: center, gap: 16px

Generated Vanilla CSS Processed

.flex-container {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

Technical Specifications & Engine Details

Technical specifications and engine details for CSS Flexbox Generator & Visual Playground
Specification	Details
Supported Formats	APPLICATION/JSON, TEXT/PLAIN → TEXT/CSS, TEXT/HTML, .CSS, .HTML
Execution Mode	100% Client-Side In-Browser (client)
Browser Requirements	Modern browser with CSS Flexbox support.
Performance Constraints	Runs client-side in browser memory. Zero external runtime dependencies or build steps required.

Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

Your design configurations remain strictly on your local device. Zero data is transmitted to external servers.

Frequently Asked Questions

What is the difference between justify-content and align-items?

justify-content aligns items along the main axis (horizontal in row mode), while align-items aligns items along the cross axis (vertical in row mode).

Does this tool generate Tailwind CSS utility classes?

Yes! The generator simultaneously translates every flex container and item property into idiomatic Tailwind utility classes.

When should I use flex-basis instead of width?

flex-basis sets the initial main-axis size of a flex item before free space is distributed by flex-grow or flex-shrink, making it ideal for fluid responsive components.

Methodology

Rankings and recommendations here are never paid for.

Last updated October 2026.