body {
    font-family: Arial, sans-serif;
    background: #f0f0f0;
    text-align: center;
}
#game {
    display: inline-block;
    margin: 20px auto;
}
.row {
    display: flex;
}
.cell {
    width: 32px;
    height: 32px;
    border: 1px solid #888;
    background: #bbb;
    font-size: 18px;
    line-height: 32px;
    text-align: center;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s;
}
.cell.revealed {
    background: #e0e0e0;
    cursor: default;
}
.cell.flagged {
    background: #ffe680;
}
.cell.bomb {
    background: #ffb3b3;
}
#status {
    margin: 10px;
    font-weight: bold;
    font-size: 18px;
}
button {
    margin-top: 10px;
    padding: 8px 16px;
    font-size: 16px;
}
