.columns-equal {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
height:800px
}
.col-bordered {
display: flex;
flex-flow: column nowrap;
flex: 0 1 50%;
}
.col-bordered div {
flex: 1;
}
.row-acc-1 {
background-color: green
}
.row-acc-2 {
background-color: red
}
.col-bordered {
border: 2px solid black
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<section>
<div class="container-fluid">
<div class="row columns-equal">
<div class="col-xs-12 col-md-6 col-bordered">
<div class="row row-acc-1">
<div class="embed-responsive embed-responsive-16by9">
<figure>
<iframe src="https://player.vimeo.com/video/238615749" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen="" style="width: 100%;"></iframe>
</figure>
</div>
</div>
<div class="row row-acc-2">
<img class="img-responsive" src="http://qkstudiodemo.com/radiocantilo/html/images/picurba-banner.jpg" alt="">
</div>
<div class="row row-acc-2" style="background-color: blue">
<a>Test 2</a>
</div>
</div>
<div class="col-xs-12 col-md-6 col-bordered">
<span>
Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
</span>
</div>
</div>
</div>
</section>
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
Hi, how would this structure generate in bootstrap with flexbox and at the same time be responsive?