body {
    font-family: Arial, sans-serif;
    margin: 0px;
    padding: 0px;
    text-align: center;
    background-color: #f4f4f9;
}

header {
    background-color: #007BFF;
    color: white;
    padding: 20px 0;
    margin-top: 20px;
}

main {
    padding: 20px;
}

button {
    background: linear-gradient(to right, #007BFF, #6F42C1);
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    color: #FFD700;
}

footer {
    background-color: #333;
    color: white;
    padding: 10px 0;
    bottom: 0;
    width: 100%;
}


.board {
    display: grid;
    grid-template-columns: repeat(15, 40px);
    grid-template-rows: repeat(15, 40px);
    gap: 5px;
    justify-content: center;
}

.cell {
    width: 40px;
    height: 40px;
    background-color: #f0f0f0;
    border: 1px solid #ccc;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.cell.taken {
    cursor: not-allowed;
}

.message_caro {
    margin-top: 20px;
    font-size: 20px;
    color: #333;
}