body { 
    background: #0f380f; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    height: 100vh; 
    margin: 0; 
    overflow: hidden;
}

canvas { 
    border: 4px solid #9bbc0f; 
    background-color: #8bac0f; 
    image-rendering: pixelated; 
}