看来苹果再次改变了影子领域。

为了隐藏播放按钮控件，您必须使用以下CSS：

/* This used to work for the parent element of button divs */
/* But it does not work with newer browsers, the below doesn't hide the play button parent div */

*::-webkit-media-controls-panel {
  display: none!important;
  -webkit-appearance: none;
}

/* Old shadow dom for play button */

*::-webkit-media-controls-play-button {
  display: none!important;
  -webkit-appearance: none;
}

/* New shadow dom for play button */

/* This one works! */

*::-webkit-media-controls-start-playback-button {
  display: none!important;
  -webkit-appearance: none;
}