ScrollView - Gesture Recognizer - Swipe vertically
<p>I have a UIScrollView that works when swiping left or right, however I've reduced the size of the scrollView so, now display area doesn't fully occupy the superview's frame, and swiping works only within the frame of the scroll view.</p>

<p>I would like to be able to scroll vertically even when swiping up and down outside the horizontal bounds of the narrowed scroll view.</p>

<p>It was recommended that I use a gesture recognizer, but that's beyond my current familiarity with iOS and could use more specific advice or a bit more guidance to get started with that.</p>