Are you using one of Grrliz's styles? (It looks like it, but I'm not sure.) I liked hers, but found the font size a little too small for my tastes. On the off chance that you agree, here's what I did:
I really don't know how to write CSS at all, but if you're using one of her Mixit styles, go to "Edit your layout layer" (from the Select Journal Style page). That takes you to the (scary!) screen full of code.
On that page, search for "STYLE SHEET," which will get you to the part where you copy&pasted the style sheet. A few lines down from there is a line that says font-size: 62.5% (or maybe some other number). If you increase that number, your fonts get a bit larger -- I found that either 65% or 67.5% looked nice to me.
Warning: I don't know what I'm doing. This works in Firefox and Safari, but I just did it by looking for lines in the code that looked like they might control the font size, and tweaking.
Style readability -- font size
I really don't know how to write CSS at all, but if you're using one of her Mixit styles, go to "Edit your layout layer" (from the Select Journal Style page). That takes you to the (scary!) screen full of code.
On that page, search for "STYLE SHEET," which will get you to the part where you copy&pasted the style sheet. A few lines down from there is a line that says font-size: 62.5% (or maybe some other number). If you increase that number, your fonts get a bit larger -- I found that either 65% or 67.5% looked nice to me.
Warning: I don't know what I'm doing. This works in Firefox and Safari, but I just did it by looking for lines in the code that looked like they might control the font size, and tweaking.