adapt.css: remove left 1px border on mobile view

adapt.css

@@ -128,7 +128,6 @@ appears on the left side of the page.
   overflow-y: auto;
   -webkit-overflow-scrolling: touch;
   background: #eaeaea;
-  border-right: 1px solid #ccc;
 }
 /* Sidebar headings */
 /* All anchors inside the menu should be styled like this. */
@@ -234,7 +233,7 @@ will disappear and the Side Menu for larger displays will be visible.
  .content { padding-left: 2em; padding-right: 2em; }
 /* width of the left (menu) column */
  #layout { padding-left: 175px; left: 0; }
- #menu { left: 175px; }
+ #menu { left: 175px; border-right: 1px solid #ccc;}
 
  .menu-link {
  position: fixed; left: 175px; display: none;  }