* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #0d0d0d;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-family: 'Courier New', monospace;
}

#gameCanvas {
    border: 4px solid #333;
    border-radius: 8px;
    cursor: pointer;
}