Update masto_back.html

masto_back.html

@@ -7,7 +7,7 @@
   position: relative;
   overflow: hidden;
   width: 100%;
-  padding-top: 100%; /* 16:9 Aspect Ratio (divide 9 by 16 = 0.5625) */
+  padding-top: 75%; /* 16:9 Aspect Ratio (divide 9 by 16 = 0.5625) */
 }
   .responsive-iframe {
   position: absolute;