
  same color as or darker than</strong> the top stripe, and <strong>the
  same color as or lighter than</strong> the bottom stripe.  (This tests
  that the blurring algorithm produces results within 5% of a Gaussian
  blur.)</p>
  <div class="stripecontainer">
   <div class="refimage"><img height="10" width="600" src="support/box-shadow-blur-definition-001-light-bound.png" alt="[reference stripe image]" /></div>
   <div class="blurcontainer"><div class="blur"></div></div>
   <div class="refimage"><img heig