CSS container-name Property
Assigns a name to a containment context for use with @container rules
Syntax
container-name: none | <custom-ident>;Values
| Value | Description |
|---|---|
| none | No container name (default) |
| <custom-ident> | Named container |
Example
.sidebar {
container-type: inline-size;
container-name: sidebar;
}
@container sidebar (min-width: 300px) {
.widget { padding: 1rem; }
}Understanding CSS container-name
The CSS container-name property assigns a name to a containment context for use with @container rules. As part of the Misc module in CSS, it is one of the most commonly used properties for controlling the visual presentation of web pages.
You can set container-name to values such as none, <custom-ident>, 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 container-name property include responsive web design, component-based layouts, and creating visually consistent interfaces across devices. It works closely with related properties like container-type, contain, display to achieve complex styling effects. Understanding how these properties interact helps you write cleaner, more maintainable stylesheets.
Browser support for container-name 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.containerName or the CSS custom properties (variables) approach for theming.
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