Thanks Mirage but inserting an empty row didn't work.

And thank you, too, Nora. But changing the blog title height had no effect at all. It's strange, I tried to change all the numbers, just to see what would impact what. The only things that I could move was the blog title-- the left margin, and the top margin. But no matter how I changed these, the distance between the blog title and the description remained the same.
And I could move the blog description-- the left margin, and the the top margin-- but I could only lower it, not raise it. I can't get the blog title and description any closer together.

I can't show you sight because right now the blog is set up on my local server. Besides the title/tagline issue, I have a couple other things to do before I go live. But if there are any other suggestions, I'd appreciate it. This is driving me crazy because the changes I've made should work, even if I don't like the result, that stupid line should at least move a little bit!