<p>content...</p>
<p>content...</p>
[icon1] (shortcode)
<div class="product_icon">
  <img src="icon1.png">
</div>
[icon2] (shortcode):
<div class="product_icon">
  <img src="icon2.png">
</div>

<div class="wrapper">
  <div class="product_icon">
    <img src="icon.png">
  <div class="product_icon">
    <img src="icon.png">
  </div>
</div>