Elastic: Fix menu width on 768px width in iPad 2

skins/elastic/styles/layout.less

@@ -248,6 +248,7 @@ html.iframe {
         // FIXME: we set background color here not in taskmenu.less, because
         // otherwise background is partially white on Android/iOS
         background-color: @color-taskmenu-background;
+        width: @layout-menu-width/2;
     }
 }
 
@@ -258,10 +259,6 @@ html.iframe {
     a.toolbar-menu-button {
         display: none;
     }
-
-    body > #layout > .menu {
-        width: @layout-menu-width/2;
-    }
 }
 
 @media screen and (min-width: (@screen-width-medium + 1px)) {