My Vue project isn't working on github pages

My Vue.js project isn’t working(Just css file working but site just have background on githhub…), It was working with no router. I added vue-router and it isn’t working.

can you provide more details? please share the link of your repo and the rendered page,

just to give you an idea, server-side scripting is not allowed on GitHub Pages

another one is when you use links, that’s the most common problem encountered,