Is this tool free to use?

Yes, this tool is completely free to use. No registration, subscription, or payment is required. All processing happens directly in your browser.

Does this tool upload data to a server?

No. All processing happens locally in your browser using JavaScript. Your data never leaves your device, ensuring complete privacy and security. The tool works even when offline.

Does this tool work on mobile devices?

Yes, this tool is fully responsive and works on all modern browsers including Chrome, Safari, Firefox, and Edge on desktop, tablet, and mobile devices.

Is an internet connection required to use this tool?

No internet connection is required after the page loads. Since all processing happens in your browser, you can use this tool offline once the page is loaded.

Is there a file size limit?

There is no server-side file size limit since files are processed locally in your browser. The only limitation is your device's memory (RAM). For very large files, we recommend processing them in smaller chunks.

📦 CSS Overflow Generator

Free online CSS overflow generator. Visually adjust overflow-x, overflow-y and overflow-behavior properties with real-time preview. Supports all overflow value combinations (visible, hidden, scroll, auto, clip). Perfect for frontend developers debugging container overflow behavior. Client-side only.

overflow-x

overflow-y

overflow-behavior

Container Width

100px300px600px

Container Height

50px150px400px

Container Boundary

This container demonstrates overflow behavior.

When content exceeds container dimensions, the overflow property controls how it's handled.

Blue horizontal text shows X-axis overflow:

→ This is a long horizontal text that tests overflow-x clipping and scrolling behavior when the container width is insufficient.

↓ Vertical content also exceeds the container.

Additional content to overflow vertically for testing overflow-y effects.

Note: With 'visible' overflow, content renders outside the container!

Generated CSS

How to Use the CSS Overflow Generator

Generate with the CSS Overflow Generator in three easy steps:

Configure Your Preferences
Adjust the settings and options for your css overflow generator. Choose parameters such as length, complexity, style, or quantity based on your needs.
Click Generate
Click the "Generate" button to create your content. The tool instantly processes your preferences and produces the result right in your browser — no waiting, no server requests.
Copy or Download the Result
Review the generated output and click "Copy" to copy it to your clipboard, or "Download" to save it as a file. You can generate as many times as you need with no limits.

FAQ

overflow属性的各个值有什么区别？

visible（默认）：内容不会被裁剪，超出容器会显示在外部。hidden：超出部分被裁剪隐藏。scroll：始终显示滚动条（无论内容是否超出）。auto：仅在需要时显示滚动条。clip：类似hidden，但禁止程序化滚动，支持overflow-clip-margin属性。

overflow-x和overflow-y可以设置不同的值吗？

可以。但需要注意，如果一个方向设置为visible，另一个方向设置为auto/scroll/hidden，visible会被强制改为auto。本工具会自动处理这种CSS规范限制，确保生成有效的代码。

overflow-behavior属性有什么作用？

overflow-behavior（CSS overscroll-behavior）控制浏览器到达滚动边界时的行为。auto（默认值）：浏览器的默认滚动边界行为。contain：阻止滚动链传播到父元素。none：不仅阻止传播，还阻止默认的滚动到边界效果（如Chrome的下拉刷新）。