@import url("https://fonts.googleapis.com/css2?family=Nunito:wght@300;400;600;700&display=swap");body{background:#add8e6;color:#333;font-family:Nunito,sans-serif}nav{margin:10px auto 30px;padding:10px 0;display:flex;justify-content:center;align-items:center;border-bottom:1px solid #ddd}button{display:block;width:250px;padding:8px 0;margin:20px auto;background:#fff;border-radius:10px;color:#00008b;text-align:center;font-size:20px}button:hover{background-color:purple;color:#fff}h3{color:red}