CSS overflow Property
Controls what happens to content that overflows an element's box
Syntax
overflow: visible | hidden | clip | scroll | auto;Values
| Value | Description |
|---|---|
| visible | Content is not clipped |
| hidden | Content is clipped without scrollbars |
| clip | Content is clipped, no programmatic scrolling |
| scroll | Always shows scrollbars |
| auto | Scrollbars appear when content overflows |
Example
.scrollable {
overflow: auto;
max-height: 400px;
}Understanding CSS overflow
The CSS overflow property controls what happens to content that overflows an element's box. As part of the Layout module in CSS, it is one of the most commonly used properties for controlling the visual presentation of web pages.
You can set overflow to values such as visible, hidden, clip, scroll, among others. Each value changes how the browser renders the affected element, giving you fine-grained control over your page layout and design. Choosing the right value depends on the specific design requirements of your project.
Common use cases for the overflow property include responsive web design, component-based layouts, and creating visually consistent interfaces across devices. It works closely with related properties like overflow-x, overflow-y, text-overflow to achieve complex styling effects. Understanding how these properties interact helps you write cleaner, more maintainable stylesheets.
Browser support for overflow is excellent across all modern browsers including Chrome, Firefox, Safari, and Edge. For older browsers, consider using fallback values or progressive enhancement strategies. The property can also be set dynamically via JavaScript using element.style.overflow or the CSS custom properties (variables) approach for theming.
Related Properties
overflow-xControls what happens to content that overflows the horizontal edges
overflow-yControls what happens to content that overflows the vertical edges
text-overflowSpecifies how overflowed content that is not displayed should be signaled to the user
clip-pathCreates a clipping region that determines which parts of an element are visible
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