Error when displaying webpage in columns - php

Question

I am doing a dynamic site in php. I have divided the page into 2 columns. The first section shows a person's profile and the second section shows the article written by him/her. The problem is when i am adding more than one article. The second article is coming below the profile. I have tried using class clearfix. Its not working. Can someone please help me?
This is my page
<div class="container">
<?php
session_start();
$q = $_SESSION['id'];
$con=mysql_connect("localhost","root","");
mysql_select_db("demo_db",$con);
$sql="select * from personal_details where id=$q";
$res=mysql_query($sql);
while($ar=mysql_fetch_array($res))
{
?>
<div>
<div class="row">
<div style="background-color:rgba(125, 178, 194, 0.43); margin-bottom:10px;" class="col-sm-8 col-md-8 col-lg-8">
<div class="row">
<div class="col-sm-4 col-md-4 col-lg-4">
<img style="margin:20px;" src="uploads/<?php echo $ar[17]; ?>">
</div>
<div class="col-sm-8 col-md-8 col-lg-8">
<h3><b>Dr. <?php echo $ar[1];?></b></h3>
<h5><?php echo $ar[8];?>, <?php echo $ar[12];?></h5>
<h5><?php echo $ar[2];?>, <?php echo $ar[7];?> years of experience</h5>
<p><?php echo $ar[16];?></p>
</div>
</div>
<div style="margin:20px;">
<h4><b>Services</b></h4>
<hr>
<ul>
<li>
<h5><?php echo $ar[18]; ?></h5>
</li>
</ul>
<h4><b>Specialisations</b></h4>
<hr>
<ul>
<li>
<h5><?php echo $ar[2]; ?></h5>
</li>
</ul>
<h4><b>Education</b></h4>
<hr>
<ul>
<li>
<h5><?php echo $ar[8]; ?> - <?php echo $ar[9]; ?> , <?php echo $ar[10]; ?> , <?php echo $ar[11];?></h5>
</li>
</ul>
<ul>
<li>
<h5><?php echo $ar[12]; ?> - <?php echo $ar[13]; ?> , <?php echo $ar[14]; ?> , <?php echo $ar[15];?></h5>
</li>
</ul>
</div>
</div>
<div class="col-sm-4 col-md-4 col-lg-4">
<h3>Articles by <?php echo $ar[1];?></h3><?php } ?>
<hr>
<?php
$sql1="select * from article_tb where id=$q";
$res1=mysql_query($sql1);
while($ar=mysql_fetch_array($res1))
{
$_SESSION['id'] = $q;
?>
<h4><b><?php echo $ar[1]; ?></b></h4>
<div class="row">
<div class="col-sm-7 col-lg-7 col-md-7">
<img src="uploads/<?php echo $ar[3]; ?>" width="170px" height="88">
</div>
<div class="col-sm-5 col-md-5 col-lg-5">
<form action="blog.php">
<input type="submit" class="btn btn-info" name="read" value="read" />
</form>
</div>
</div>
<hr>
</div>
<?php } ?>
</div>
</div>