diff --git a/packages/form-builder/addon/components/cfb-code-editor.js b/packages/form-builder/addon/components/cfb-code-editor.js
index 63eb60b33..415a48542 100644
--- a/packages/form-builder/addon/components/cfb-code-editor.js
+++ b/packages/form-builder/addon/components/cfb-code-editor.js
@@ -7,6 +7,7 @@ import json from "highlight.js/lib/languages/json";
 import markdown from "highlight.js/lib/languages/markdown";
 import jexl from "highlightjs-jexl/src/languages/jexl";
 import isEqual from "lodash.isequal";
+import "highlight.js/styles/github.css";
 
 hljs.configure({ ignoreUnescapedHTML: true });