* {
    box-sizing: border-box;
}
a {
    color: black;
}
footer {
    font-family: arial;
    font-size: 12px;
    padding-left: 10px;
    position:absolute;
    bottom: 0;
    width: 100%;
}

/* the canvas *must not* have any border or padding, or mouse coords will be wrong */
#canvas {
    padding-right: 0;
    display: block;
    border: 0px none;
    visibility: hidden;
}