diff --git a/challenges/01-responsive-web-design/applied-visual-design.json b/challenges/01-responsive-web-design/applied-visual-design.json
index a5377fcfc1d..544d66fdb9d 100644
--- a/challenges/01-responsive-web-design/applied-visual-design.json
+++ b/challenges/01-responsive-web-design/applied-visual-design.json
@@ -1407,7 +1407,7 @@
         "<style>",
         "  div {",
         "    width: 60%;",
-        "    height:200px;",
+        "    height: 200px;",
         "    margin-top: 20px;",
         "  }",
         "  ",