body {
    height:100%;
    width:100%;
    margin:0;
    padding:0;
    background-color:black;
    color: #ccc;
    font-family: "Courier New", monospace;
}

a {
    color: #ccc;
}

canvas {
    padding-left: 0;
    padding-right: 0;
    margin-left: auto;
    margin-right: auto;
    display: block;
}

#canvas_div {
    margin: auto;
    text-align: center;
}