diff --git a/c3.css b/c3.css
index 4a7f49e..0e38af6 100644
--- a/c3.css
+++ b/c3.css
@@ -84,6 +84,9 @@
 
 /*-- Bar --*/
 
+.c3-bar {
+  stroke-width: 0;
+}
 .c3-bar._expanded_ {
   fill-opacity: 0.75;
 }
diff --git a/c3.js b/c3.js
index 98b0d41..d80a72b 100644
--- a/c3.js
+++ b/c3.js
@@ -3580,8 +3580,6 @@
             mainBar.enter().append('path')
                 .attr("class", classBar)
                 .style("stroke", function (d) { return color(d.id); })
-                .style("stroke-width", 2)
-                .style("opacity", 0)
                 .style("fill", function (d) { return color(d.id); })
                 .style("fill-opacity", function () { if (__color_opacity) { return __color_opacity; } return initialOpacity; });
             mainBar