title: using css, how to create a white circle within a transparent div?
body: <p>I wish to create a white circle with fuzzy edges contained within a transparent div by using css gradients.</p>
  
  <p>With the z-index higher than the body and absolute positioning I should be able to move this over any part of the page and "white-out" everything beneath the circle.</p>
  
  <p>I have tried my favorite gradient generators, but they haven't worked.</p>