There were a couple other conversion sites out there but I wanted to create one with a little nicer UI and make it open source so anyone can contribute. https://github.com/interviewer-io/haml.io
Hmm, I'm using Menlo which is monospaced correct? Oh, are you on a PC? Maybe that just comes on a Mac. I created an issue and will look into it. Thanks!
Ah, that's a Mac font. I'm on Linux, but you should try a more general monospaced font like Consolas, or there's probably one on Google Fonts you can use.