{
  "font": {
    "family": {
      "base"     : {
        "value": "-apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif"
      },
      "code" : {
        "value": "source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace"
      }
    }
  },
  "size": {
    "text": {
      "base"  : {
        "value": "{size.text.medium.value}"
      },
      "small" : {
        "value": "0.75"
      },
      "medium": {
        "value": "1"
      },
      "large" : {
        "value": "1.5"
      }
    }
  }
}