#canvas1 {
    border: 5px solid black;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #000033;
    box-shadow: 0 0 20px #0000FF;
}

body {
    background-color: #000;
    overflow: hidden;
    margin: 0;
    padding: 0;
    font-family: 'Press Start 2P', cursive;
}