I need to build a static website at GitHub pages. Can I use NET technologies for that? What stack?

I've done already something using only html files, adding some JS functionality and adding Bootstrap for the looks. But I'd like to add dependencies and make something more professional (though always static). What can I do without using Jekyll and taking the most .NET approach possible? I've heard about Webpack, Gulp, and others, but I don't know where to start (I'm pretty much of newbie regarding web dev outside the .NET ecosystem).