title: I want to create a responsive grid using CSS
body: <p>I want to create a grid like this, </p>
  
  <p><a href="https://i.stack.imgur.com/9piAH.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9piAH.jpg" alt="Picture of the image grid"></a></p>
  
  <p>It should be responsive, I'm using bootstrap 3. Is there any way I could code this up. I tried different column combinations and trying to adjust margins and padding. 
  But not actually working with it. </p>