apellow

Changing font sizes

I'm a C5 newbie of about 2 days so please bear with me.

I've got lots of menu items and I want them to fit on one line. I added a custom CSS entry to reduce the size - "nav ul li a {font-size:1.05em;)" - which works fine except now there's some space between the menu and the submenu items. How do I push that flush?

Also, the h1 font is a little larger than I'd like but the CSS is in typography.css. Is there a way to change that without editing the file?

Thanks!