body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: 'Arial', sans-serif;
    background-color: #ffffff;
}

.container {
    text-align: center;
    padding: 20px;
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.label {
    font-size: 136px;
    /* font-weight: bold; */
    margin-bottom: 20px;
    color: #333;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    gap: 10px;
    max-width: 500px;
    margin: 0 auto 20px;
}

.square {
    width: 50px;
    height: 50px;
    background-color: #ddd;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

.square:hover {
    transform: scale(1.1);
}

.square.active {
    background-color: #007bff;
}

.buttons-row {
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
}

.btn {
    padding: 10px 20px;
    margin: 0 10px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    transition: background-color 0.3s;
}

.btn.primary {
    background-color: #007bff;
    color: white;
}

.btn.primary:hover {
    background-color: #0056b3;
}

.btn.secondary {
    background-color: #28a745;
    color: white;
}

.btn.secondary:hover {
    background-color: #218838;
}