html`
<hr>
<style>
svg {
background: #faed8f
}
circle.item{
fill: #0f261f;
cursor: pointer;
transition: fill 0.2s ease;
}
circle.item:hover {
fill: #405416
}
circle.cluster{
fill: #ff616b;
}
// circle.cluster:hover {
// fill: #aa3d2f;
// }
circle.root{
display: none;
}
</style>
`