body {
    font-family      : "Lucida Console", Monaco, monospace;
    background-color : steelblue;
    color            : black;
}

h1, h2, h3, p {
    text-align: center;
}

canvas {
    background-color : olivedrab;
    border           : ridge;
}

input {
    display: inline-block;
}

.center {
    width: 50%;
    margin: 0 auto;

    display: flex;
    justify-content: center;
    align-items: center;
}