body {
    margin: 0;
    background-color: #19191f;
    font-family: "Courier New", monospace;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    width: 80vmin;
    height: 80vmin;
}

.box {
    background-color: #2a2a33;
    border: 2px solid #444;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 1.5rem;
    text-align: center;
}

.center {
    background-color: #333340;
    font-weight: bold;
}
``