What version are you running? 2.0.12 What's the URL of the page containing the problem? And diffviewer page. What steps will reproduce the problem? 1. Upload a C++ file that has the term "bool" in it. 2. Inspect the "bool" text node - note that it has a .kt class applied to it 3. No .kt style is applied. What is the expected output? What do you see instead? I expected .kt to have some styling. In fact, looking at the syntax.css file, it looks like it's supposed to set font-weight: bold. What operating system are you using? What browser? OS X 10.8.5, Firefox Nightly 39.0a1 Please provide any additional information below. The problem is here in rb/css/syntax.css: .kt, { font-weight: bold } /* Keyword.Type */ That comma after .kt and before the open brace is invalid CSS. It should be removed.