diff --git a/src/index.html b/src/index.html
index 75c70ee..4a45731 100644
--- a/src/index.html
+++ b/src/index.html
@@ -23,13 +23,13 @@
   <div id="regexp-render">
     <svg xmlns="http://www.w3.org/2000/svg" version="1.1">
       <style type="text/css">
-        text {
+        text, tspan {
           font: 12px Arial;
           dominant-baseline: text-after-edge;
         }
 
         path {
-          fill: transparent;
+          fill-opacity: 0;
           stroke-width: 2px;
           stroke: #000;
         }
@@ -72,7 +72,7 @@
           stroke: #a0a0a0;
           stroke-dasharray: 6,2;
           stroke-width: 2px;
-          fill: transparent;
+          fill-opacity: 0;
         }
 
         .quote {