Usually, I develop using https://harpjs.com/ https://harpjs.com/ because it's literally zero-configuration and does a ton (seriously, "harp server" and you get

Usually, I develop using https://harpjs.com/ https://harpjs.com/ because it's literally zero-configuration and does a ton (seriously, "harp server" and you get sass/less, ejs/jade/markdown and more), then compile to flat html, css and javascript.