Tofurious Help -dropdown menu

hi there.
I have tofurious #1 blog template. I’ve changed things up a big in the css stylesheet. I know nothing about html, but i’m getting along.
i want to space out my categories list in the dropdown menu. i was successful by changing the “line-height from 19px to 15px” and then the “height: auto;” to “height: 25px”. This worked. but one problem. If any other category is under the one category that takes up two lines, then it is squished too close and the “height 25px” doesnt take it’s effect. HMmmm. Can anybody help with this complicated question, but surely easy answer? my blog is: http://johnnabrynnblog.com. EX: right now my one category that takes up two lines is “photographer’s resources” but if i have anything under that -which is past the P in the alphabet, such as “uncategorized”, then the word “uncategorized” is almost touching the “photo..resources” link.
HELP.
THANKS!