add multiple lines if number of charts are more

src/ChartLoader.tsx

@@ -6,11 +6,11 @@ export default class ChartLoader extends React.Component<any, any> {
   public render() {
     const colorMaps = this.props.colorMaps;
     return (
-      <Columns isCentered={true}>
+      <Columns isCentered={true} isMultiline={true}>
         {this.props.chartList.map((o: any, i: number) => {
           const colorMap = colorMaps[o.chartColumn];
           return (
-            <Column key={i} isSize={3}>
+            <Column key={i} isSize={4}>
               <Chart csvFile={o.fileName} chartColumn={o.chartColumn} colorMap={colorMap} />
             </Column>
           );