body {
            font-family: Arial, sans-serif;
            background-color: #f4f4f4;
            margin: 0;
            color: #333;
        }

        header {
            background-color: #60f560;
            color: white;
            text-align: center;
            padding: 20px;
        }

        nav {
            background-color: #222;
            text-align: center;
            padding: 10px;
        }

        nav a {
            color: white;
            text-decoration: none;
            margin: 15px;
            font-weight: bold;
        }

        nav a:hover {
            color: #ffcc00;
        }

        .container {
            width: 80%;
            margin: auto;
            padding: 20px;
        }

        .card {
            background: white;
            padding: 20px;
            margin-top: 20px;
            border-radius: 10px;
            box-shadow: 0px 2px 8px rgba(0,0,0,0.2);
        }

        footer {
            background-color: #222;
            color: white;
            text-align: center;
            padding: 15px;
            margin-top: 30px;
        }

        button {
            background-color: #60f560;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }

        button:hover {
            background-color: #60f560;
        }