This code only scales horizontally:
<div class="row">
<div class="box col-xs-3"></div>
<div class="box col-xs-3"></div>
<div class="box col-xs-3"></div>
<div class="box col-xs-3"></div>
</div>
The height should also be scalable, someone knows how to do this with bootstrap?
The width and height are the same here:
After resizing window the width and height are not the same anymore: