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Make sure your browser is not zoomed in to above 100% – or try zooming your browser out in order to fit more on screen.

This WIKI page explains how to adjust your browser zoom settings.

https://www.wikihow.com/Zoom-With-a-Web-Browser

or

https://lifehacker.com/5815125/how-to-zoom-in-and-out-on-a-web-page

or

https://www.pcworld.com/article/2038445/how-to-undo-accidental-browser-zoom.html