body {
            font-family: Arial, sans-serif;
            max-width: 700px;
            margin: 40px auto;
            padding: 20px;
            text-align: center;
        }

        h1 {
            margin-bottom: 30px;
        }

        label {
            display: block;
            margin-top: 15px;
            margin-bottom: 5px;
        }

        input {
            width: 250px;
            padding: 8px;
            font-size: 16px;
        }

        button {
            margin-top: 25px;
            padding: 10px 25px;
            font-size: 16px;
            cursor: pointer;
        }

        .ergebnis {
            margin-top: 30px;
            padding: 20px;
            background: #f2f2f2;
        }

        .gewinn {
            font-size: 22px;
            font-weight: bold;
            margin-top: 15px;
        }

        .zurueck {
            display: inline-block;
            margin-bottom: 25px;
            padding: 8px 14px;
            text-decoration: none;
            color: #333;
            background-color: #eee;
            border-radius: 5px;
        }

        .zurueck:hover {
            background-color: #ddd;
        }