Я сделал то, что вы хотите:
кодовый блок: https://codepen.io/Rishab2019/pen/JjYrLEB
.col-md-11, .col-sm-11, .col-xs-11{
position:fixed!important;
margin-left:80px;
}
.new1{
margin-left:-30px;
margin-top:-9px;
}
.row1{
position:fixed;
display:inline;
margin-left:500px;
width:700px;
}
.row{
position:fixed;
display:inline;
width:800px;
}
.para{
float:left;
position:fixed;
margin-top:40px;
}
.para1{
float:left;
position:fixed;
margin-top:40px;
}
hr{
width:700px;
float:left;
}
.border1{
position:absolute;
margin-left:-100px;
}
@media all and (max-width:768px){
.row{
position:fixed;
}
.row1{
position:fixed;
width:100%;
margin-left:450px;
}
.head{
font-size:25px;
}
hr{
width:250px;
margin-left:0px;
}
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
<div class="row">
<div class="col-md-6 col-sm-12 col-xs-12">
<div class="row">
<div class="col-md-1 col-sm-1 col-xs-1 mt-2">
<span class="border border-primary rounded" style="background-color:#0275d8;display:inline-block;padding:10px;"> </span>
</div>
<div class="new col-md-11 col-sm-11 col-xs-11">
<h2 class="head">Who we are</h2>
<hr>
<p class="para">Scaoasijdaosijdoaisdjh.</p>
</div>
</div>
</div>
<div class="col-md-6 col-sm-12 col-xs-12">
<div class="row1">
<div class="col-md-1 col-sm-1 col-xs-1 mt-2">
<span class="border1 border-success rounded" style="background-color:#5cb85c;display:inline-block;padding:10px;"> </span>
</div>
<div class="new1 col-md-11 col-sm-11 col-xs-11">
<h2 class="head">What we do</h2>
<hr>
<p class="para1">textxtxttx</p>
</div>
</div>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
Аналогично, вы можете использовать медиа-запросы для дополнительных модификаций.