h1 {
    text-align: center;
}
#canvas {
        border: 3px double orange;
        display: block;
        margin: 0 auto;
}
h2 {
    text-align: center;
}
.sketch {
    width: 400px;
    height: 500px;
    border: 3px solid black;
    display: block;
    margin: 0 auto;
}