device-width
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see thecompatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Note:To query for the width of the viewport, developers should use thewidth media feature instead.
Thedevice-widthCSSmedia feature can be used to test the width of an output device's rendering surface.
Syntax
Thedevice-width feature is specified as a<length> value. It is a range feature, meaning that you can also use the prefixedmin-device-width andmax-device-width variants to query minimum and maximum values, respectively.
Examples
Applying a special stylesheet for devices that are narrower than 800 pixels
<link rel="stylesheet" media="screen and (max-device-width: 799px)" href="https://cdn.example.com/narrow-styles.css" />Specifications
| Specification |
|---|
| Media Queries Level 4 # device-width |