This feature is not Baseline because it does not work in some of the most widely-used browsers.
The :volume-locked CSS pseudo-class selector represents an element that is capable of making sound, such as <audio> or <video>, but the audio volume of the media element is currently "locked" by the user.
User agents may set media muted or volume values according to user preferences (e.g., remembering the last set value across sessions, on a per-site basis, or otherwise). An element that is :volume-locked cannot be muted, un-muted, or have its volume changed via JavaScript. The locked status is an operating system or user agent preference.
:volume-locked {
/* ... */
}
:volume-locked {
border: 5px solid green;
}
video:volume-locked {
border: 5px solid aqua;
}
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
:volume-locked |
No | No | No | No | 15.4 | No | No | No | 15.4 | No | No | 15.4 |
:buffering:muted:paused:playing:seeking:stalledvolume property of HTMLMediaElement objects
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https://developer.mozilla.org/en-US/docs/Web/CSS/:volume-locked