title: How do I create a radial css3 border gradient shadow
body: <p>I have two columns that can stretch to variable heights, the designer wants to have a shadow between the two columns, but as you can see the image fades out at the top and the bottom. That means I can't just use a background image using css that is left aligned in the column on the right.</p>
  
  <p><img src="https://i.stack.imgur.com/LfQmr.png" alt="Columns with a radial shadow in between"></p>
  
  <p>So then I though maybe I can use a css 3 border shadow that has a radial gradient. I am probably going to use table cells to do this because I need the shadow to stretch to the height of the tallest column. How do I do this?</p>