#playfairCanvas {
    margin: auto;
    width: 512px; 
}

#playfairTorus {
    margin: auto;
    width: 640px; 
    height: 480px;
}
.no-select {
    user-select: none;
    -webkit-user-select: none;  /* Chrome and Safari */
    -moz-user-select: none;  /* Firefox */
    -ms-user-select: none;  /* IE 10 and 11 */
}