Wikipedia small writing on surface pro
As a workaround, you can press the ctrl++ keys to magnify the display of the web page. (ctrl+- shrinks it.)
That causes the browser itself to magnify the page rather than the OS, so the page stays within the bounds of the browser's window and you don't need to shift the display left and right to view the entire width of the page.
As an alternative to using the keyboard, there is usually a "Zoom" option in the browser's menus. Another way is to hold the ctrl key and use the scroll wheel on the mouse to adjust the magnification.