My columns keep smashing into each other - css

Question

So I'm trying to have two jumbotrons indicating two portals into my site. On a medium-large screen they appear side by side with spacing in between. On a tablet or mobile device I would like the jumbotrons to be stacked. The docs on the bootstrap 3 make this automatically happen when I shrink the page, however this isn't happening to me. I'm not sure what i'm doing wrong, I'm really new to bootstrap. Right now when it becomes a medium sized screen the white space disappears and they get squeezed side by side.
My html looks like this:
<div class="container-fluid">
<div class="row">
<div class="container special">
<div class="clearfix visible-sx"></div>
<div class="jumbotron text-center col-md-5 col-md-offset-1">
<h1>Become a Screener</h1>
<p>Yahh a screener.</p>
<a class="btn btn-danger" href="{% url 'screener_info' %}">More Info</a>
</div>
<div class="jumbotron text-center col-md-5 col-md-offset-1">
<h1>Have your books screened</h1>
<p>yah an author.</p>
<a class="btn btn-success" href="{% url 'author_info' %}" role="button">More Info</a>
</div>
</div>
</div>
</div>

Answer 1

Try changing your code to this:
<div class="container-fluid">
<div class="row">
<div class="container special">
<div class="clearfix visible-sx"></div>
<div class="col-sm-5 col-md-offset-1">
<div class="jumbotron text-center">
<h1>Become a Screener</h1>
<p>Yahh a screener.</p>
<a class="btn btn-danger" href="{% url 'screener_info' %}">More Info</a>
</div>
</div>
<div class="col-sm-5 col-md-offset-1">
<div class="jumbotron text-center">
<h1>Have your books screened</h1>
<p>yah an author.</p>
<a class="btn btn-success" href="{% url 'author_info' %}" role="button">More Info</a>
</div>
</div>
</div>
</div>
</div>
Simply create a div around jumbotrons with md-5 and offset class.