fix: trace graph styles (#165)

- Prevent vertical shift on hover due to border
- Show faded traces

Author: jyash97

frontend/src/modules/Traces/TraceGraph.css

@@ -36,14 +36,24 @@
 	stroke-linecap: round;
 	stroke-linejoin: round;
 }
+
+/* Prevent text vertical shift on hover */
+.d3-flame-graph-label {
+	border: 1px dotted transparent;
+	cursor: pointer;
+}
+
 /* Transparency simulates sub pixel border https://stackoverflow.com/questions/13891177/css-border-less-than-1px */
 
 .d3-flame-graph-label:hover {
-	border: 1px dotted;
 	border-color: rgba(255, 255, 255, 0.75);
 }
 /* 
 .d3-flame-graph-label:hover {
     border: 1px solid;
     border-color: rgba(255, 255, 255, 0.75);
   } */
+
+.fade:not(.show) {
+	opacity: 0.5;
+}