Refactor scss

src/themes/flow.scss

@@ -31,7 +31,6 @@
 
 .cluster rect {
   fill: $secondBkg !important;
-  rx: 4 !important;
   stroke: $clusterBorder !important;
   stroke-width: 1px !important;
 }
@@ -39,3 +38,17 @@
 .cluster text {
   fill: $titleColor;
 }
+
+div.mermaidTooltip {
+  position: absolute;
+  text-align: center;
+  max-width: 200px;
+  padding: 2px;
+  font-family: 'trebuchet ms', verdana, arial;
+  font-size: 12px;
+  background: $secondBkg;
+  border: 1px solid $border2;
+  border-radius: 2px;
+  pointer-events: none;
+  z-index: 100;
+}

src/themes/mermaid.scss

@@ -3,22 +3,3 @@
 @import 'gantt';
 @import 'class';
 @import 'git';
-
-.node text {
-  font-family: 'trebuchet ms', verdana, arial;
-  font-size: 14px;
-}
-
-div.mermaidTooltip {
-  position: absolute;
-  text-align: center;
-  max-width: 200px;
-  padding: 2px;
-  font-family: 'trebuchet ms', verdana, arial;
-  font-size: 12px;
-  background: $secondBkg;
-  border: 1px solid $border2;
-  border-radius: 2px;
-  pointer-events: none;
-  z-index: 100;
-}