> Three browsers, three layouts (surf uses webkit). Hmmm, well, I suspect if you used groff with -Tlatin1, -Tlj4, -Tdvi, and -Tps you might also get four different layouts... Simply consider different browsers like different devices.
> Firefox's is perfect! It's better than the others, but I wouldn't call it perfect (but obviously that's a matter of taste). For example, numerator and denominator of fractions should in my opinion use the regular font size (except in inline equations, where you don't want extra line space). TeX usually does it nicer.
