How do I embed a C++ game in a HTML site?

I am a beginner-intermediate programmer, I wrote a game in C++ and have never done web development in C++. I was wondering if there is a flash player-like app that would allow me to embed the game into a standard HTML-CSS-JS site. Is this possible with flash player? If yes, how? If not, how could I do this? My goal is to have the game run without having to do backend in C++