每篇文章的背景（PHP CMS）

When echo out the posts I want them to get a background. Not all of them together but individually. So there is a post with a grey background and then some space (no background) before the other post.

How should I do?

This is my PHP code:

<div class="meny">


 <div class="rad">
 <div class="meny_text">
 <p><?php foreach ($articles as $article) { ?>
 <?php echo $article['article_title']; ?><br><br>
 <?php } ?></p>
 </div>

<div class="price">
<p>35</p>
</div>
</div>