I ended up editing the number of ems for my sidebar instead, because when I changed it the way you mentioned, it ended up making some of my other entry codings look really really awful lol and I was too lazy to fix them. But yes, it very much helped! It's right where you said it'd be. :)

It doesn't look like it affected your live preview at all and could honestly have been a fluke because I'm never lucky with CSS. No matter how much I love tinkering with it, it kind of hates me a little. But I got the little sucker to work, so ha! I was going to nudge you if I couldn't get it on my own, but I always like to try on my own first. Thanks so much!

Thank you, fingers crossed! :D