* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}

body {
    background-color: #30303f;
    color: #f4f4f4;
    line-height: 1.6;
    padding: 20px;
}

canvas {
    display: block;
    margin: 0 auto;
    background-color: #74ABD2;
}