svg {
    background-color: #fff;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -o-user-select: none;
    user-select: none;
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}
text {
    pointer-events: none;
}
text.id {
    fill: white;
    font: 14px sans-serif;
    text-anchor: middle;
    font-weight: bold;
}
text.debug {
    font: 24px sans-serif;
    fill: black;
}