The whole CSS code of the site has been rewritten because it became an unmaintainable mess. This affected all pages, and took way too long. We've switched to normalization instead of reset, box-sizing box model, the code is written with the help of SASS (nothing fancy, just using variables and few ifs) and a naming scheme (BEM) that makes sense. If you see any difference beside the forum and torrent comments and the alert colors then please report it. That unfortunately means that none of the custom stylesheets are working now. We've made the source available to make it easier to convert them. We've added a new option related to the custom styles, see your profile page. It is possible to create a style that only overrides a few things from an official style (font size, width for example) without maintaining the whole stylesheet if you uncheck the standalone checkbox.