title: IOS/Xcode: storyboard screen turning black
body: <p>I am just learning Xcode.  I did something that caused a view controller to turn black below the navigation bar when you build app.</p>
  
  <p>It looks white in storyboard.</p>
  
  <p>Also, when I pull a label onto the storyboard, it aligns to the left margin and does not show the drag boxes around it.</p>
  
  <p>I may have inadvertently clicked something but when I compared it in attributes and identity inspectors line by line to another project, nothing seems amiss, i.e. everything is the default value.</p>
  
  <p>Has anyone run across this?</p>
  
  <p>There is not code in associated class that would cause this as it is generic i.e. plain vanilla.</p>
  
  <p>Would appreciate any suggestions.  Thx.</p>