#app{font-family:Arial,sans-serif;padding:20px}nav{margin:20px 0}nav a{margin:0 10px;color:#42b983;text-decoration:none}nav a.router-link-active{font-weight:700;color:#2c3e50;text-decoration:underline}hr{border:none;border-top:1px solid #eee;margin:20px 0}