title: Swift Constraints Don't Apply to All Sizes
body: <p>I'm trying to do something kinda of basic, but the Xcode has changed its constraint mechanism for size classes, apparently.
  And so I want to know how to make this constraint actually apply for all size classes.</p>
  
  <p><a href="https://i.stack.imgur.com/zm8dj.png" rel="nofollow noreferrer">iPhone 7</a></p>
  
  <p><a href="https://i.stack.imgur.com/iiR7R.png" rel="nofollow noreferrer">iPhone SE</a></p>