body,html{margin:0}#app,body,html{min-height:100vh}#app{font-family:Arial,sans-serif;color:#2c3e50;flex-direction:column}#app,nav{display:flex}nav{padding:1rem;gap:1rem}nav a{font-weight:700;color:#2c3e50;text-decoration:none}nav a.router-link-exact-active{color:#099dfd}#popup_message{position:fixed;top:0;left:0;width:100%;height:100%;background:hsla(0,0%,100%,.9);display:flex}#popup_message .message{width:300px;padding:1rem;margin:auto;background:#fff;box-shadow:0 3px 6px rgba(0,0,0,.15)}#popup_message .message p{text-align:center}