files/en-us/web/api/cssmediarule/index.md
{{ APIRef("CSSOM") }}
The CSSMediaRule interface represents a single CSS {{cssxref("@media")}} rule.
{{InheritanceDiagram}}
Inherits properties from its ancestors {{domxref("CSSConditionRule")}}, {{domxref("CSSGroupingRule")}}, and {{domxref("CSSRule")}}.
No specific methods; inherits methods from its ancestors {{domxref("CSSConditionRule")}}, {{domxref("CSSGroupingRule")}}, and {{domxref("CSSRule")}}.
The CSS below includes a media query with one style rule.
The MDN live sample infrastructure combines all the CSS blocks in the example into a single inline style with the id css-output, so we first use {{domxref("document.getElementById()")}} to find that sheet.
myRules[0] returns a CSSMediaRule object, from which we can get the mediaText.
<p id="log"></p>
@media (width >= 500px) {
body {
color: blue;
}
}
const log = document.getElementById("log");
const myRules = document.getElementById("css-output").sheet.cssRules;
const mediaList = myRules[0]; // a CSSMediaRule representing the media query.
log.textContent += ` ${mediaList.media.mediaText}`;
{{EmbedLiveSample("Examples","100%","50px")}}
{{Specifications}}
{{Compat}}