No. Like most sites, there's nothing about this one that requires me to remember who you are between visits. If you want to personalise the look of this site, use your browser's equivalent of userContent.css.
Logs are however collected for debugging and security purposes, including IP addresses, request strings and referrer information. They are not kept longer than (about) 4 months.
Aside from this site, if you have general concerns about cookies:
- Consider using uBlock Origin and Cookie AutoDelete. Be aware that Cookie AutoDelete still appears to leave cookies lying around sometimes. They might be set by the extension itself, but it's still a good idea to occasionally purge them manually.
- Be aware that third party extensions may also be storing information outside of the usual browser cookie system. Thankfully Flash, which was one of these, is dead.
- Use Free Software. Nothing's perfect, but at least you stand a chance of understanding what your tools are actually doing.