CSS flex-shrink Property
Sets the flex shrink factor of a flex item to prevent overflow
Syntax
flex-shrink: <number>;Values
| Value | Description |
|---|---|
| 1 | Items shrink equally (default) |
| 0 | Item does not shrink |
| 2 | Shrinks twice as much as others |
Example
.fixed-sidebar {
flex-shrink: 0;
width: 280px;
}Understanding CSS flex-shrink
The CSS flex-shrink property sets the flex shrink factor of a flex item to prevent overflow. As part of the Flexbox module in CSS, it is one of the most commonly used properties for controlling the visual presentation of web pages.
You can set flex-shrink to values such as 1, 0, 2, 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 flex-shrink property include responsive web design, component-based layouts, and creating visually consistent interfaces across devices. It works closely with related properties like flex-grow, flex-basis, flex to achieve complex styling effects. Understanding how these properties interact helps you write cleaner, more maintainable stylesheets.
Browser support for flex-shrink 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.flexShrink or the CSS custom properties (variables) approach for theming.
Related Properties
flex-growSets how much a flex item will grow relative to the rest of the items
flex-basisSets the initial main size of a flex item before free space is distributed
flexShorthand for flex-grow, flex-shrink, and flex-basis combined
min-widthSets the minimum width of an element preventing it from becoming narrower
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