In Windows 10 when you adjust the volume, a volume pop-up, also know as media volume control overlay, appears in the top left corner of the screen. It is well integrated with recent Chrome and Edge versions and allows you to pause a YouTube video or switch to the next entry in the playlist.
How to Enable Volume Control and Hardware Media Key Handling in Google Chrome
Google Chrome 75 introduces a new feature that allows using media keys on the keyboard to control the media content playback in the browser. When enabled, it allows using the Volume Up, Volume Down, or Mute media keys, you will see a special toast notification with buttons that you can use to control media playback.