[Vuejs]-Router Link in VUE JS is not showing active

Step 1: HTML template

 <template>
  <div id="app">
    <div class="navLink col-3">
      <router-link class="link" to="/">Home</router-link>
      <router-link class="link" to="/about">About</router-link>
      <router-link class="link" to="/movies">Movies</router-link>
      <router-link class="link" to="/actors">Actors</router-link>
      <router-link class="link" to="/profile">Profile</router-link>
    </div>
    <router-view></router-view>
  </div>
</template>

Step 2: Create router

import Vue from "vue";
import VueRouter from "vue-router";
import Home from "../components/Home.vue";
import About from "../components/About.vue";
import Actors from "../components/Actors.vue";
import Movies from "../components/Movies.vue";
import Profile from "../components/Profile.vue";

Vue.use(VueRouter);

const routes = [
  {
    path: "/",
    name: "Home",
    component: Home
  },
  {
    path: "/about",
    name: "About",
    component: About
  },
  {
    path: "/actors",
    name: "Actors",
    component: Actors
  },
  {
    path: "/movies",
    name: "Movies",
    component: Movies
  },
  {
    path: "/profile",
    name: "Profile",
    component: Profile
  }
];

const router = new VueRouter({
  mode: "history",
  linkExactActiveClass: "active",
  routes
});

export default router;

Step 3: Add style for active class

 <style>
.link {
  margin: 10px;
}
.link.active {
  background-color: red;
  color: white;
}
</style>

DEMO