Hello Lain,
(forgive me if this has been posted about already!) I also assume that λ isn't the right place to put this since HTML isn't really a programming language.
For the past year or so, I've been trying my hand at web design by writing my own webpage. It's been really fun and almost therapeutic. So far I've done everything in mousepad, and while it has been helpful and unforgiving to my careless mistakes, I think I'd like to have something a bit more complex and easy to work with. Ideally, I could see what I was writing in real time as a webpage (kind of like when using Firefox to inspect different things on a page. I only use CSS and HTML so any application would only need to be able to do that.
Sorry if this is a noob question, I still don't know much about this, and am mostly just learning at my own pace for personal enjoyment. Thanks for your help!