.container {
            background-color: #ffffff;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.2);
            text-align: center;
        }

        input[type="number"] {
            width: 80px;
            padding: 8px;
            margin: 5px;
            font-size: 16px;
            border: 1px solid #ccc;
            border-radius: 5px;
        }

        button {
            background-color: #4caf50;
            color: white;
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }

        button:hover {
            background-color: #45a049;
        }

        ul {
            list-style: none;
            padding: 0;
        }

        li {
            font-size: 18px;
            margin: 5px 0;
        }