body{font-family:Arial,sans-serif;margin:0;padding:0;display:flex;justify-content:center;align-items:center;height:100vh}.app{text-align:center}a{margin-top:20px;display:inline-block;text-decoration:none;color:#333;border:1px solid #333;padding:10px 20px;border-radius:5px}a:hover{background-color:#333;color:#fff}.buttons{display:flex;flex-direction:column}