Bootstrap 4 Alpha Grid unable 2 tables on side by side - css

Question

As using Bootstrap 4, I'm aware the .col-xs are dropped, instead of .col, I have tested on bootstrap 3.5 which I'm using
<div class="col-xs-4">
Table left side goes here
</div>
<div class="col-xs-8">
Table right side goes here
</div>
And it works fine, as you can see it from here.
however, it's a bit different on Bootstrap 4 Alpha.
<div class="col-2">
<h2 class="sub-header">Test Arear</h2>
<div class="table-responsive">
<table class="table table-striped">
<tbody>
<tr>
<td class="col-md-1">Test</td>
</tr>
<tr>
<td class="col-md-1">Test 2</td>
</tr>
<tr>
<td class="col-md-1">Test 3</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="col-10">
<h2 class="sub-header">Ticket Number</h2>
<div class="table-responsive">
<table class="table table-striped">
<tbody>
<tr>
<td class="col-md-1">1,001</td>
<td class="col-md-2">1,002</td>
<td class="col-md-3">1,003</td>
</tr>
<tr>
<td class="col-md-1">1,004</td>
<td class="col-md-2">1,005</td>
<td class="col-md-3">1,006</td>
</tr>
<tr>
<td class="col-md-1">1,002</td>
<td class="col-md-2">1,021</td>
<td class="col-md-3">1,023</td>
</tr>
</tbody>
</table>
</div>
</div>
As you can see results from here.
I want it on the side by side table but it's not side by side. Am I missing something?

Answer 1

You need a row wrapper as bootstrap four is done on flex rather than floats so the columns now need to be wrapped to make them into columns
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-beta.2/css/bootstrap-grid.css" rel="stylesheet"/>
<div class="row">
<div class="col-2">
<h2 class="sub-header">Test Arear</h2>
<div class="table-responsive">
<table class="table table-striped">
<tbody>
<tr>
<td class="col-md-1">Test</td>
</tr>
<tr>
<td class="col-md-1">Test 2</td>
</tr>
<tr>
<td class="col-md-1">Test 3</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="col-10">
<h2 class="sub-header">Ticket Number</h2>
<div class="table-responsive">
<table class="table table-striped">
<tbody>
<tr>
<td class="col-md-1">1,001</td>
<td class="col-md-2">1,002</td>
<td class="col-md-3">1,003</td>
</tr>
<tr>
<td class="col-md-1">1,004</td>
<td class="col-md-2">1,005</td>
<td class="col-md-3">1,006</td>
</tr>
<tr>
<td class="col-md-1">1,002</td>
<td class="col-md-2">1,021</td>
<td class="col-md-3">1,023</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
Example Bootply