In order to have the options available to you make sure to use Edge as your browser and then look to the right of the URL (web address) and you will see what looks like a book.
Make sure to select he book and you will see that distractions have been removed from the article and a gray rectangle with options will appear at the top of the article. If the rectangle disappears, make sure to click directly above the title of the article.
You will then see options you see below. These options deal with text size, read aloud, grammar tools (talk with your tech department for options), printing options, as well as full screen.
Embedded below is a 1 minute and 56 second YouTube tutorial.