diff --git a/assets/css/styles.css b/assets/css/styles.css
index 9a9ca65..2f972cd 100755
--- a/assets/css/styles.css
+++ b/assets/css/styles.css
@@ -12,6 +12,10 @@ body {
     overflow: hidden;
     background-color: #fff;
 }
+frame {
+    width: 100%;
+    height: 100%;
+}
 /* the whole interface is in the table */
 table.blockly-table {
     height: 95%;