I haven't found any working solution for my problem so I really hope you can help me.
Here is my jsfiddle.
@import url('http://getbootstrap.com/dist/css/bootstrap.css');
<!-- snippet 1 -->
<div class="col-md-12 col-sm-12">
<div class="col-md-6 col-sm-6" style="padding:0;">
<div class="well" style="border-right:1px solid black;">
Test
</div>
</div>
<div class="col-md-6 col-sm-6" style="padding:0;">
<div class="well">
srewdf<br>srewdf<br>srewdf<br>srewdf<br>
</div>
</div>
</div>
<!-- snippet 2 -->
<div class="col-md-12 col-sm-12">
<div class="col-md-9 col-sm-9" style="padding:0;">
<div class="well" style="border-right:1px solid black;">
srewdf<br>srewdf<br>srewdf<br>srewdf<br>
srewdf<br>srewdf<br>srewdf<br>srewdf<br>
</div>
</div>
<div class="col-md-3 col-sm-3" style="padding:0;height:50%;">
<div class="well">
Test
</div>
</div>
<div class="col-md-3 col-sm-3" style="padding:0;height:50%;">
<div class="well">
Test
</div>
</div>
</div>
In snippet 1 I need multiple nested elements to have the same height based on the largest element. In the second snippet it's similar. The two elements on the right side should have together the same height as the element on the left.
How is it possible to solve this without losing the responsibility?
Thanks for your time and help!