diff --git a/demo/index.html b/demo/index.html
index 57afb8e..a99c588 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -7,8 +7,7 @@
     <style>
       .remote-caret {
         position: relative;
-        border-left: 1px solid black;
-        border-right: 1px solid black;
+        border-left: 2px solid black;
         margin-left: -1px;
         margin-right: -1px;
         box-sizing: border-box;