{
  "base": {
    "style": {
      "backgroundColor": "#F5F5F5",
      "borderColor": "#CCCCCC",
      "borderStyle": "solid",
      "borderWidth": "1px",
      "borderRadius": "4px",
      "color": "#555555",
      "cursor": "pointer",
      "marginBottom": "4px",
      "marginRight": "4px"
    }
  },
  "variants": [
    {
      "pseudo": "hover",
      "style": {
        "borderColor": "#AAAAAA"
      }
    }
  ]
}