(master): Update hover for tooltip.

Author: Joe Crick

main.css

@@ -28,6 +28,12 @@ body {
   .tooltip {
     margin-bottom: 30px;
 
+    .tooltip-target {
+      border: 1px solid lightgrey;
+      border-radius: 5px;
+      padding: 5px;
+    }
+
     .tooltip-body {
       margin-top: -90px;
       margin-left: 100px;