Check out my progress with Bootstrap:
<div class="container-flex">
<div class="row">
<div class="col-lg-3">1</div>
<div class="col-lg-3">2</div>
<div class="col-lg-3">3</div>
<div class="col-lg-3">4</div>
</div>
</div>
I have a basic setup with 4 columns that collapses into a single column on the large (lg) breakpoint. Is there a way to modify it so that it collapses into two columns on the large breakpoint and then into one column on the medium (md) breakpoint? I've searched through various Bootstrap tutorials but haven't found a solution yet.
Take a look at my code on jsfiddle: https://jsfiddle.net/noe562h0/