My goal though is to move the page contents upward some in the layout.
I've looked through the header.php, page.php, style.css, and my custom page templates, and I can't figure out how to adjust that space between the navbar and the page title/contents. I knew CSS pretty well a bunch of years ago, when it was a bit different, so I'm not even sure that I know what I'm looking for anymore. If you need to know, I'm using the Rotary theme by Fearless Flyer.
I don't know if there's a way to just take a look at the source code and figure it out, but I'd be super glad if someone could! Thanks in advance.