diff --git a/website/pages/playground/index.html b/website/pages/playground/index.html
index b128b52b..84e0d127 100644
--- a/website/pages/playground/index.html
+++ b/website/pages/playground/index.html
@@ -131,6 +131,10 @@
/* display as 2x2 grid */
@media (min-width: 800px) {
+ .options-container {
+ border-right: 0;
+ }
+
.editor {
flex-basis: 50%;
border-left: 1px solid #ddd;
@@ -196,6 +200,7 @@
width: 225px;
height: 100%;
border-bottom: 1px solid #ddd;
+ border-right: 1px solid #ddd;
flex: 0 1 auto;
}