remove global style to avoid affecting grafana ui component and fix i…

…ssue #37

README.md

@@ -31,5 +31,13 @@ git clone https://github.com/gipong/grafana-groupedbarchart-panel.git
 sudo service grafana-server restart
 ```
 
+using Docker (for grafana:7.0.0)
+
+```
+docker run -d -p 3000:3000 -v "$(pwd)":/var/lib/grafana/plugins grafana/grafana:7.0.0
+```
+
+it only loads on start-up and need to restart this container after you updating this plugin
+
 ## License
 MIT

dist/css/groupedBarChart.css

@@ -1,4 +1,4 @@
-svg {
+#chart > svg {
     width: 100%;
     height: 100%;
     position: center;

dist/external/groupedBarChart.js

@@ -4,8 +4,8 @@ export default class groupedBarChart {
     constructor(opts) {
         this.data = opts.data;
         this.margin = opts.margin;
-        this.width = parseInt(opts.width, 10);
-        this.height = parseInt(opts.height, 10);
+        this.width = opts.width;
+        this.height = opts.height;
         this.showLegend = opts.legend;
         this.legendType = opts.position;
         this.chartType = opts.chartType;
@@ -280,4 +280,4 @@ export default class groupedBarChart {
         this.tips = d3.select(this.element).append('div')
             .attr('class', 'toolTip');
     }
-}
+}