                 
                 showOverview()
             }
+            
+            self.transcriptButton.isHidden = (viewModel?.session.transcript() == nil)
+            
+            let shouldHideButtonsBar = self.transcriptButton.isHidden && self.bookmarksButton.isHidden
+            self.menuButtonsContainer.isHidden = shouldHideButtonsBar
         }
     }
     

        b.state = NSOffState
        b.target = self
        b.action = #selector(tabButtonAction(_:))
        
        return b
    }()

    private lazy var menuButtonsContainer: WWDCBottomBorderView = {
        let v = WWDCBottomBorderView()
        
        v.isHidden = true
        v.wantsLayer = true
        
        v.heightAnchor.constraint(equalToConstant: 50).isActive = true
