You can make your dashboard fullscreen by following these steps:
- Disable showing the toolbar in full screen mode by deselecting View -> "Always Show Toolbar in Full Screen" in your web browser (e.g. Chrome, Safari).
- Enter full screen mode by either selecting the full screen icon at the top of the browser or using the full screen shortcut key. In Windows, F11 will enter/exit full screen mode. For Macs, control + command + f will enter/exit full screen mode.