diff --git a/c3.css b/c3.css
index daf3efe..2f82c80 100644
--- a/c3.css
+++ b/c3.css
@@ -28,6 +28,10 @@ path, line {
 }
 /*-- Point --*/
 
+.__circle._e_ {
+  stroke-width: 1px;
+  stroke: white;
+}
 .selected-circle {
   fill: white;
   stroke-width: 2px;