What is Flexbox and when should I use it?

Flexbox is a CSS layout model that arranges items along a single axis (row or column). It's ideal for navigation bars, card rows, and any one-dimensional alignment task. Use the flex-direction, justify-content, and align-items properties to control spacing and alignment.

What is CSS Grid and when should I use it?

CSS Grid is a two-dimensional layout system that lets you define both columns and rows. It's ideal for full-page layouts, image galleries, and dashboards. Use grid-template-columns and grid-template-rows to define the structure.

What does grid-template-columns: repeat(3, 1fr) mean?

This creates three equal-width columns. The 1fr unit means one fraction of the available space. You can mix values, for example '1fr 2fr 1fr' creates a wider centre column.

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

justify-content controls alignment along the main axis (horizontal by default), while align-items controls alignment along the cross axis (vertical by default). If flex-direction is column, the axes are swapped.

Is the generated CSS compatible with all browsers?

Flexbox and CSS Grid are supported in all modern browsers (Chrome, Firefox, Safari, Edge). For very old browsers you may need vendor prefixes, but for 2024+ projects the generated CSS works without any modifications.

Is this tool free to use?

Yes. All Skybin developer tools are free with no account, API key, or usage limits.

Does my data get sent to a server?

No. Processing runs in your browser whenever possible. Sensitive input never leaves your device unless a tool explicitly fetches a URL you provide (e.g. OG Validator).

Can I use this on mobile?

Yes. The tools work in modern mobile browsers, though a desktop screen is easier for large JSON or PDF workflows.

How is this different from desktop apps?

There is nothing to install or update. Open a bookmarked URL and start working — ideal for quick tasks during development or support calls.

Are there keyboard shortcuts?

Most tools support standard paste (Ctrl+V / Cmd+V) and select-all in text areas. Copy buttons provide one-click output.

Does Skybin store my history?

No. We do not log tool inputs or outputs. Refreshing the page clears in-memory state unless the tool encodes state in the URL.

免费工具

CSS Layout Generator

Generate CSS Flexbox and Grid layout code visually with a live preview. Copy ready-to-use CSS for your project.

Controls

flex-direction

flex-wrap

justify-content

align-items

align-content

gap (px)8px

Preview

Generated CSS

.container {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: stretch;
  gap: 8px;
}

What is this tool?

The CSS Layout Generator lets you visually configure Flexbox and CSS Grid properties and instantly see the result. Adjust controls and copy the generated CSS directly into your project — no manual guesswork required.

Flexbox vs CSS Grid

Flexbox is best for one-dimensional layouts — arranging items in a single row or column. CSS Grid excels at two-dimensional layouts, letting you define both rows and columns. Use this tool to experiment with both and understand which fits your design.

Why use CSS Layout Generator online?

CSS Layout Generator in the browser saves context switching: no CLI install, no fragile one-liners, and instant feedback for teammates who do not live in the terminal. It is ideal for debugging, demos, and quick checks during code review.

Tips for best results

Work with a sample payload first, then paste production data. Keep privacy in mind: prefer local browser processing for secrets, tokens, and customer data. Bookmark this page for faster access next time.

How to use

Choose the Flexbox or Grid tab.
Adjust the controls — direction, wrapping, alignment, gaps, and column/row templates.
The preview updates live so you can see the result immediately.
Click the Copy button to copy the full CSS rule and paste it into your stylesheet.
Review the output and use Copy to paste into your editor, ticket, or chat.
Need another utility? Scroll to Related Tools below for CSS Layout Generator companions on skybin.io.
For a deeper walkthrough, read the linked Skybin blog article at the bottom of this page.

在线工具与终端对比

终端 / CLI	本工具
Install CLI tools or write a one-off script	Open the tool in your browser — no install
Look up flags in man pages or Stack Overflow	Paste input or upload files where supported
Repeat for each file format or edge case	Get instant visual feedback and copy buttons

All layout generation runs in your browser — no data is sent to any server.

来自 Skybin 博客

Free developer tools from Skybin

在 Skybin 阅读指南

常见问题

What is Flexbox and when should I use it?: Flexbox is a CSS layout model that arranges items along a single axis (row or column). It's ideal for navigation bars, card rows, and any one-dimensional alignment task. Use the flex-direction, justify-content, and align-items properties to control spacing and alignment.
What is CSS Grid and when should I use it?: CSS Grid is a two-dimensional layout system that lets you define both columns and rows. It's ideal for full-page layouts, image galleries, and dashboards. Use grid-template-columns and grid-template-rows to define the structure.
What does grid-template-columns: repeat(3, 1fr) mean?: This creates three equal-width columns. The 1fr unit means one fraction of the available space. You can mix values, for example '1fr 2fr 1fr' creates a wider centre column.
What is the difference between justify-content and align-items in Flexbox?: justify-content controls alignment along the main axis (horizontal by default), while align-items controls alignment along the cross axis (vertical by default). If flex-direction is column, the axes are swapped.
Is the generated CSS compatible with all browsers?: Flexbox and CSS Grid are supported in all modern browsers (Chrome, Firefox, Safari, Edge). For very old browsers you may need vendor prefixes, but for 2024+ projects the generated CSS works without any modifications.
Is this tool free to use?: Yes. All Skybin developer tools are free with no account, API key, or usage limits.
Does my data get sent to a server?: No. Processing runs in your browser whenever possible. Sensitive input never leaves your device unless a tool explicitly fetches a URL you provide (e.g. OG Validator).
Can I use this on mobile?: Yes. The tools work in modern mobile browsers, though a desktop screen is easier for large JSON or PDF workflows.
How is this different from desktop apps?: There is nothing to install or update. Open a bookmarked URL and start working — ideal for quick tasks during development or support calls.
Are there keyboard shortcuts?: Most tools support standard paste (Ctrl+V / Cmd+V) and select-all in text areas. Copy buttons provide one-click output.
Does Skybin store my history?: No. We do not log tool inputs or outputs. Refreshing the page clears in-memory state unless the tool encodes state in the URL.