:root{--sidebar-panel-width:384px;--content-panel-width:800px}body._panel-width420-experiment{--sidebar-panel-width:420px}body._wide-panel720-experiment{--content-panel-width:720px}.feed-video-player-component__video-player-container{height:100%}.feed-video-player-component__video-player-container._hidden{visibility:hidden}