Update style.css

Co-Authored-By: JehanKandy  <jehankandy@gmail.com>

Author: BackendExpert

css/style.css

@@ -27,4 +27,10 @@ textarea{
     border: none;
     margin: 20px 0;
     height: 40vh;
+}
+iframe{
+    margin:20px;
+    background: white;
+    border: 2px;
+    
 }