Text size/color issue in IE

I was checking the browser compatibility of my code, and the text size and color isn't working correctly in IE, yet works wonderfully and perfectly in all other browsers. However, if I style it in the document instead of in the stylesheet, it seems to work, but that's messy code and I don't really want to do that. Also, the text that's not working is under a class, but I'm positive nothing is overwriting it (again, because it worked in all other browsers). Does anyone have any ideas about why IE wouldn't register it?