I have the following html code:
<div class="container">
  <div class="row row1">
      <div class="col col1 col-md-3">
          Column 1
      </div>
      <div class="col col2 col-md-3">
          Column 2 
      </div>
      <div class="col col3 col-md-3">
          <div class="row">
              Column 3
          </div>
          <div class="row">
              Column 4
          </div>
      </div>
  </div>
I'm using bootstrap grid layout system and I want to achieve something like this:
The idea is that col1 and col2 should have the same height as col3 and col4 combined.
Is there a way of doing this without specifying the height of the container and setting height 100% on children elements as I did on this example?

 
     
     
     
     
    