Can you help me fix an error on my website?
Website: [url removed, login to view]
1. Problem: My site looks great in my Mac Chrome browser, but there's an error when the website is viewed in Mac Firefox. Specifically, there's little brown boxes (thin brown lines) around the menu buttons on the left-hand side of the page. I assume that the problem is in the css file, which is at [url removed, login to view] (The file is also attached to this project.) Perhaps add a line of code? Or change a line of code? I'd like to keep the CSS basically the same, but just fix the problem.
2. Can you check the website in other browsers, such as Internet Explorer for PC and Firefox for PC? If there are errors that show up on those browsers, change the CSS so it fixes those problems, too?