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Build a CSS Flexbox Layout Visually

Create Flexbox layouts visually by clicking instead of coding. Adjust direction, alignment, wrapping, and gaps, then copy the generated CSS.

!The Problem

CSS Flexbox is powerful but has many interacting properties: flex-direction, justify-content, align-items, flex-wrap, gap, flex-grow, flex-shrink, and flex-basis. Memorizing what each combination does is hard, and the mental model of main axis vs. cross axis trips up even experienced developers. You end up guessing property values, refreshing the browser, adjusting, and repeating until the layout looks right.

The Solution

Our Flexbox Generator lets you build layouts visually. Add flex items, adjust container properties with dropdowns and sliders, and see the result update in real-time. When the layout looks right, copy the generated CSS. No guessing, no trial-and-error, no memorizing property names.

Open CSS Flexbox Generator

Step-by-Step Guide

Open the Flexbox Generator

Navigate to the Flexbox Generator tool on OnlineTools4Free.

Set container properties

Choose flex-direction (row or column), justify-content (how items distribute along the main axis), and align-items (how items align along the cross axis).

Add and configure items

Add flex items and set individual properties: flex-grow, flex-shrink, flex-basis, and align-self. The preview updates live.

Adjust spacing and wrapping

Set the gap between items and enable flex-wrap if items should flow to the next line when the container is too narrow.

Copy the CSS

Copy the generated CSS for both the container and individual items. Paste it directly into your stylesheet.

Try CSS Flexbox GeneratorNow — It's Free

No signup, no upload, 100% private. Works right in your browser.

Open Flexbox Gen

Pro Tips

Start with the container direction: row for horizontal layouts (navbars, card grids), column for vertical layouts (sidebars, forms).
Use gap instead of margins between flex items — it is cleaner and does not cause the double-margin problem at edges.
flex: 1 on an item makes it grow to fill available space. Use this for main content areas next to fixed-width sidebars.
If items are not wrapping as expected, check that flex-wrap: wrap is set on the container and that items have a minimum width (flex-basis).

Frequently Asked Questions

Use Flexbox for one-dimensional layouts (a row of cards, a navigation bar, centering content). Use CSS Grid for two-dimensional layouts (page layouts with rows AND columns). Many real-world designs use both: Grid for the page structure and Flexbox inside each section.

flex: 1 is shorthand for flex-grow: 1, flex-shrink: 1, flex-basis: 0%. It tells the item to grow and fill all available space in the container, sharing space equally with other flex: 1 items.

Yes. Flexbox has been supported in all modern browsers for years. Even IE11 supports a slightly older version of the spec. You can use Flexbox in production without any vendor prefixes.

Yes, and this is very common. A flex item can itself be a flex container with its own direction, alignment, and spacing. This is how most complex layouts are built in modern CSS.

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Related Use Cases

!The Problem

The Solution

Open CSS Flexbox Generator

Step-by-Step Guide

Open the Flexbox Generator

Navigate to the Flexbox Generator tool on OnlineTools4Free.

Set container properties

Choose flex-direction (row or column), justify-content (how items distribute along the main axis), and align-items (how items align along the cross axis).

Add and configure items

Add flex items and set individual properties: flex-grow, flex-shrink, flex-basis, and align-self. The preview updates live.

Adjust spacing and wrapping

Set the gap between items and enable flex-wrap if items should flow to the next line when the container is too narrow.

Copy the CSS

Copy the generated CSS for both the container and individual items. Paste it directly into your stylesheet.

Pro Tips

Start with the container direction: row for horizontal layouts (navbars, card grids), column for vertical layouts (sidebars, forms).
Use gap instead of margins between flex items — it is cleaner and does not cause the double-margin problem at edges.
flex: 1 on an item makes it grow to fill available space. Use this for main content areas next to fixed-width sidebars.
If items are not wrapping as expected, check that flex-wrap: wrap is set on the container and that items have a minimum width (flex-basis).

Build a CSS Flexbox Layout Visually

!The Problem

The Solution

Step-by-Step Guide

Open the Flexbox Generator

Set container properties

Add and configure items

Adjust spacing and wrapping

Copy the CSS

Try CSS Flexbox GeneratorNow — It's Free

Pro Tips

Frequently Asked Questions

Related Tools

CSS Grid Generator

CSS Formatter

CSS Minifier

Related Use Cases

Create Secure Password for Banking

Convert CSV to JSON for API Import

Format JSON for API Debugging

Generate Privacy Policy for Mobile App

Build a CSS Flexbox Layout Visually

!The Problem

The Solution

Step-by-Step Guide

Open the Flexbox Generator

Set container properties

Add and configure items

Adjust spacing and wrapping

Copy the CSS

Try CSS Flexbox GeneratorNow — It's Free

Pro Tips

Frequently Asked Questions

Related Tools

CSS Grid Generator

CSS Formatter

CSS Minifier

Related Use Cases

Create Secure Password for Banking

Convert CSV to JSON for API Import

Format JSON for API Debugging

Generate Privacy Policy for Mobile App