Sousmargot/src/components/nav.vue

<template>
  <nav>
  <router-link to="/"> Home </router-link>
  <router-link to="/config"> Config </router-link>
  </nav>
</template>

<script>
export default {
  name: 'Nav',
  props: {
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
nav {
    background-color: green;
}
</style>