classes.red.style.stroke: red
grid: {
  grid-columns: 2
  grid-gap: 10

  cell 1.a -> cell 2.b -> cell 3.c.d: {
    class: red
  }

  cell 3: {
    c -> e
    c.d -> f.g
  }
  cell 3.f.g -> cell 1.a: {
    class: red
  }
}