Update back.html

back.html

@@ -5,8 +5,9 @@
 <style>
   .container {
   position: relative;
-  overflow: hidden;
+  overflow: scroll;
   width: 100%;
+  padding-top: 100%; /* 16:9 Aspect Ratio (divide 9 by 16 = 0.5625) */
 }
   .responsive-iframe {
   position: absolute;