title: How to not display common border between two adjacent divs?
body: <p>I have two divs with same border style, have different heights and are back to back to each other. I want the common border between them not to display. How can this be done in html and css?</p>
  
  <p><img src="https://i.stack.imgur.com/GmXan.gif" alt="enter image description here"></p>