Remember positions on scroll.

src/main.js

@@ -30,7 +30,10 @@ const routes = [
 
 const router = new VueRouter({
   mode: 'history',
-  routes
+  routes,
+  scrollBehavior: (to, from, savedPosition) => {
+    return savedPosition || { x: 0, y: 0 }
+  }
 })
 
 /* eslint-disable no-new */