html`
<link href="https://fonts.googleapis.com/css2?family=Roboto+Condensed&display=swap" rel="stylesheet">
<style>
text {
font-size: 1.2rem;
font-family: 'Roboto Condensed';
text-anchor: middle; fill: #999;
}
.connector {
stroke-width: 3px;
stroke: #b00;
color: #b00;
}
</style>`