message: Update the CSS property as per the web client changes
diff: @@ -257,7 +257,7 @@ export default class WindowsTitleBar extends React.Component<{}, IState> {
  private updateTitleBar(): void {
  const { isFullScreen, titleBarHeight } = this.state;
  const contentWrapper = document.getElementById('content-wrapper');
  - const appView = document.getElementsByClassName('jss3')[0] as HTMLElement;
  + const appView = document.getElementsByClassName('jss1')[0] as HTMLElement;
  const root = document.getElementById('root');
  const railContainer = document.getElementsByClassName('ReactRail-container-2')[0] as HTMLElement;
  const railList = document.getElementsByClassName('railList')[0] as HTMLElement;
  