Docs > Styling & Customization > Rules > Rules 12

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

  <script nonce="undefined" src="https://cdn.zingchart.com/zingchart.min.js"></script>
  <style>
    html,
    body,
    #myChart {
      height: 100%;
      width: 100%;
    }
  </style>
</head>

<body>
  <div id='myChart'></div>
  <script>
    ZC.LICENSE = ["569d52cefae586f634c54f86dc99e6a9", "b55b025e438fa8a98e32482b5f768ff5"];
    var myConfig = {
      "graphset": [{
        "type": "line",
        "background-color": "#fff",
        "title": {
          "text": "Marker Size & Guide Lines",
          "background-color": "#fff",
          "font-color": "#333"
        },
        "plot": {
          "marker": {
            "rules": [{
                "rule": "%v < -15",
                "size": "4"
              },
              {
                "rule": "%v >= -15 && %v < 20",
                "size": "5"
              },
              {
                "rule": "%v > 20",
                "size": "7"
              }
            ]
          }
        },
        "scale-x": {
          "line-color": "#333"
        },
        "scale-y": {
          "line-color": "#333",
          "guide": {
            "rules": [{
              "rule": "%v < 0",
              "line-color": "red",
              "alpha": "0.7"
            }]
          }
        },
        "series": [{
            "values": [50, 20, 48, -45, -5, 98, 35, -10, -30, -55, 15, -90, 49, 72, 81, 32],
            "line-color": "#c03",
            "marker": {
              "background-color": "#c03",
              "border-color": "#c03"
            }
          },
          {
            "values": [20, 2, -20, -15, -45, -5, 5, 30, 2, -28, -10, 15, 35, 40, 11, -2, -15],
            "line-color": "#9cc",
            "marker": {
              "background-color": "#9cc",
              "border-color": "#9cc"
            }
          }
        ]
      }]
    };

    zingchart.render({
      id: 'myChart',
      data: myConfig,
      height: "100%",
      width: "100%"
    });
  </script>
</body>

</html>

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

  <script src="https://cdn.zingchart.com/zingchart.min.js"></script>
</head>

<body>
  <div id='myChart'></div>
</body>

</html>

html,
body,
#myChart {
  height: 100%;
  width: 100%;
}

var myConfig = {
  "graphset": [{
    "type": "line",
    "background-color": "#fff",
    "title": {
      "text": "Marker Size & Guide Lines",
      "background-color": "#fff",
      "font-color": "#333"
    },
    "plot": {
      "marker": {
        "rules": [{
            "rule": "%v < -15",
            "size": "4"
          },
          {
            "rule": "%v >= -15 && %v < 20",
            "size": "5"
          },
          {
            "rule": "%v > 20",
            "size": "7"
          }
        ]
      }
    },
    "scale-x": {
      "line-color": "#333"
    },
    "scale-y": {
      "line-color": "#333",
      "guide": {
        "rules": [{
          "rule": "%v < 0",
          "line-color": "red",
          "alpha": "0.7"
        }]
      }
    },
    "series": [{
        "values": [50, 20, 48, -45, -5, 98, 35, -10, -30, -55, 15, -90, 49, 72, 81, 32],
        "line-color": "#c03",
        "marker": {
          "background-color": "#c03",
          "border-color": "#c03"
        }
      },
      {
        "values": [20, 2, -20, -15, -45, -5, 5, 30, 2, -28, -10, 15, 35, 40, 11, -2, -15],
        "line-color": "#9cc",
        "marker": {
          "background-color": "#9cc",
          "border-color": "#9cc"
        }
      }
    ]
  }]
};

zingchart.render({
  id: 'myChart',
  data: myConfig,
  height: "100%",
  width: "100%"
});