Update back.html

back.html

@@ -5,12 +5,12 @@
 <style>
   .container {
   position: relative;
-  overflow: scroll;
+  overflow: hidden;
   width: 100%;
   padding-top: 100%; /* 16:9 Aspect Ratio (divide 9 by 16 = 0.5625) */
 }
   .responsive-iframe {
-  position: relative;
+  position: absolute;
   top: 0;
   left: 0;
   bottom: 0;