I have some strange issues with the monospace fonts in Vivaldi (Chrome):

(https://docs.python.org/3/library/logging.html)

Notice how the spacing is too large and numbers seem to be unicode symbols(?)

It looks fine in Firefox:

I can see there were some changes last year (#85,#87). If I change the CSS to:

tt,code,pre {font-family: monospace, monospace;font-size:96.5%;}

this seems to fix my issue. Having just a singlemonospace causes the text size to be a bit strange.