Change font-size of campaign emails

Hello,

I’ve searched this forum and beyond but found no CSS codes for the campaign templates. In particular, I want to make the font size larger and have the company logo centered. Right now, the logo is off to the left and the text extends far right of it.

Screenshot: https://snipboard.io/E0LPpl.jpg

(Since we don’t seem to be able to view broadcasts that have already been sent, I do not know what page to suggest you look at.)

I am aware that templates are part of the premium plan, but I would like to see some of them before I spend the money to discover if I like them.

Right now, all we’re getting are ugly emails.

Thank you so much!