The width CSS @media media feature can be used to apply styles based on the width of the viewport (or the page box, for paged media).
The width feature is specified as a <length> value representing the viewport width. It is a range feature, meaning that you can also use the prefixed min-width and max-width variants to query minimum and maximum values, respectively.
<div>Watch this element as you resize your viewport's width.</div>
/* Exact width */
@media (width: 360px) {
div {
color: red;
}
}
/* Minimum width */
@media (min-width: 35rem) {
div {
background: yellow;
}
}
/* Maximum width */
@media (max-width: 50rem) {
div {
border: 2px solid blue;
}
}
| Specification | Status | Comment |
|---|---|---|
| Media Queries Level 4 The definition of 'width' in that specification. | Working Draft | The value can now be negative, in which case it computes to false. |
| Media Queries The definition of 'width' in that specification. | Recommendation | Initial definition. The value must be nonnegative. |
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 9.0 | (Yes) | (Yes) |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | ? | ? | ? | ? | ? |
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https://developer.mozilla.org/en-US/docs/Web/CSS/@media/width