Android Tablet Shows Offline in Web Browser

Problem: When you go into a web browser on the tablet, it shows it is offline.

Solution: Wifi signal either was too low, or wifi may have been turned off.
Swipe down from the top right where the time and date are, to see the settings window. Tap on the wifi icon if it isn't showing up green. If it is green, tap it to shut it off, then tap again to turn it back on.

If it is green there and still not working, open the regular settings in the app switcher.

Go to wifi and see if it shows it's on. If off, slide it to on and see if it stays on and turns green.
If it goes green, go back and try web browser again.

If web browser still shows offline after all the above steps, shut down the tablet completely by holding down the power button, then choosing to shut down. Power it back on and see if the wifi icon is now showing in the top right of the screen. Test the web browser.