diff --git a/index.html b/index.html
index 9cd49d0eb5..76978d8940 100644
--- a/index.html
+++ b/index.html
@@ -15,7 +15,7 @@
   }
 
   textarea.textbox {
-    height: 400px;
+    height: 250px;
     border: 1px solid #8db5e4;
     margin-bottom: 16px;
     flex: 2;
@@ -42,7 +42,7 @@
       flex-direction: column;
     }
 
-    .textbox {
+    textarea.textbox {
       min-height: 279px;
     }