[
  {"selector":"node", "css": {
    "border-width": "2px",
    "width": "data(size)",
    "height": "data(size)", 
    "content": "data(id)"
  }},
  {"selector": "edge[interaction='stimulate']", "css": {
    "line-color": "green"
  }},
  {"selector": "edge[interaction='inhibit']", "css": {
    "line-color": "red"
  }}
]