What do you have to do to view the portal full screen?

To view the portal in full screen, look for a full-screen icon, usually represented by two diagonal arrows or a square symbol, typically located in the top right corner of the window. Clicking this icon will expand the portal to fill your entire screen. Alternatively, you can press the F11 key on your keyboard (for most Web Browsers) to toggle full-screen mode. To exit, simply press F11 again or click the full-screen icon once more.