body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: aliceblue;
}

canvas {
    display: block;
    margin: 0 auto;
}

.centre {
    text-align: center;
}

.format_img {
    height: 500px;
    width: 491.5px;
    display: block;
    margin: 20px auto;
}

p.centre, ul.centre {
    width: 60%;
    margin: 20px auto;
    text-align: justify;
}