Merge pull request #1695 from mermaid-js/1694_style_flowchart

#1694 Applying styles from the graph definition for flowcharts

src/dagre-wrapper/nodes.js

@@ -261,6 +261,7 @@ const rect = (parent, node) => {
 
   rect
     .attr('class', 'basic label-container')
+    .attr('style', node.style)
     .attr('rx', node.rx)
     .attr('ry', node.ry)
     .attr('x', -bbox.width / 2 - halfPadding)

src/dagre-wrapper/shapes/util.js

@@ -15,7 +15,10 @@ export const labelHelper = (parent, node, _classes, isNode) => {
     .attr('id', node.domId || node.id);
 
   // Create the label and insert it after the rect
-  const label = shapeSvg.insert('g').attr('class', 'label');
+  const label = shapeSvg
+    .insert('g')
+    .attr('class', 'label')
+    .attr('style', node.labelStyle);
 
   const text = label
     .node()