It's not a secret that HackerNews is a bit... dated at this point. I love reading it, I love the links, but man it brings me back to the 90's. This userstyle aims to restyle the original interface with a more modern one.

1. Install the Stylish extension for Chrome
2. Open up extension options and paste the whole CSS
3. Specify the domain name to be news.ycombinator.com
4. Add a title and save

Enjoy.