If the problem in question is mainly about installing Linux itself, then css-tools is not the most relevant piece, assuming that this is a private installation. If the problem is installing css-tools on Linux, then more infos are needed to give reasonable response.
Being very clear and informative with your info request is a must. Right now your request could just as well mean a Linux install problem or the the installation problem of a tool, which can either be the tomoyo tool or some kind of CSS (cascading style sheet) editor.
Linux Archive