Merge branch 'file-content-mobile' into 'master'

Reduce top and bottom margin on file viewer on mobile

See merge request !14114

app/assets/stylesheets/framework/files.scss

@@ -17,10 +17,13 @@
       max-width: $limited-layout-width-sm;
       margin-left: auto;
       margin-right: auto;
+
+      @media (min-width: $screen-md-min) {
         padding-top: 64px;
         padding-bottom: 64px;
       }
     }
+  }
 
   table {
     @extend .table;