Close download/open dialog in fullscreen mode

If you're using an iPad (7th generation) and encounter a full-screen dialog without an apparent way to close it when opening a web app from the home screen, you can try the following steps:

1. Swipe down from the top of the screen to reveal the address bar in Safari. This action may bring the dialog into view, allowing you to access the close button.
2. Look for a small "Done" or "Close" button within the dialog box. It may be located in the top-left or top-right corner of the dialog. Tap on that button to close the dialog.
3. If the above options don't work, try using the app switcher to force-close Safari. Swipe up from the bottom of the screen and pause in the middle to access the app switcher. Find the Safari app preview and swipe it up or off the screen to force-close it. After reopening Safari, the dialog should no longer be present.
4. Alternatively, you can restart your iPad. Press and hold the power button until the "slide to power off" option appears. Slide it to power off your device, and then press the power button again to turn it back on. After the restart, the dialog should no longer appear when you open the web app from the home screen.

By following these steps, you should be able to close the full-screen dialog and resume using the web app normally on your iPad (7th generation).