.container {
        text-align: center;
    }
    input[type="number"] {
        width: 100px;
        padding: 8px;
        margin: 5px;
        border: 1px solid #ccc;
        border-radius: 4px;
    }
    button {
        padding: 8px 16px;
        border: none;
        border-radius: 4px;
        background-color: #4caf50;
        color: white;
        cursor: pointer;
    }
    button:hover {
        background-color: #45a049;
    }