How to reduce size of window?

[DewGuy]

Using a 15 inch MBP running Mojave and Safari.  The width of the forum screen is just over my screen width, such that I'm getting a scroll bar left and right.  I'll try to post an image:

... I'm using the default "Scaled" resolution in Sys Prefs, with the next-to-last option chosen for more space (so I could only go one size smaller for the text).

You might have the "View" zoomed in, in Safari.  Try Command-0 (Zero) to reset it to "Actual Size", or Command +/- to zoom in/out.

Ugh.  Just did command-0, now everything is tiny.  I can use command-minus to zoom out, but then all the other pages of mine in Safari are likewise reduced in size and very hard to read.

I guess I'd want some way to reduce the font sizes for the forum specifically, since this font size worked fine for the old forum (it would fit across the screen just fine).

If you're willing to change your browser to Firefox, it will allow you to zoom only the text.