[data-ui=PaneLayout]>[data-ui=Pane]:first-child{max-width:300px;min-width:300px}[data-ui=PaneLayout]>[data-ui=Pane]:first-child [data-ui=PaneHeader]{display:none}[data-ui=PaneLayout]>[data-ui=Pane]:nth-child(2){max-width:420px;min-width:360px}