Nice work and all, but what's wrong with a local .html file your favorite text editor, and a browser? I've been doing that for years to play around with html, css, and js.
1. Create a file
2. Open it in your text editor
3. Edit code
4. Switch to browser
5. Open up the file
6. Switch back to editor
7. Edit code
8. Hit save
9. Switch back to browser
10. Hit refresh
11. GOTO 6
