Update index.html

Author: Gmac4247

index.html

@@ -3335,9 +3335,8 @@ <h3 itemprop="name" style="margin:7px">Volume of a Sphere</h3>
     });
 </script>
 </div>
-</section>
 <br><br><br><br>
-<section itemprop="offers" itemscope itemtype="http://schema.org/Offer" style="border: 2px solid red; 
+<div itemprop="offers" itemscope itemtype="http://schema.org/Offer" style="border: 2px solid red; 
             padding: 10px" id="sphere-surface">
 <p style="margin:6px">Advertisement</p>
 <br><br>
@@ -3360,6 +3359,7 @@ <h3 itemprop="name" style="margin:7px">Surface Area of a Sphere</h3>
 <p style="margin:6px">( + tax, if applicable )</p>
 <br>
 <a style="margin:12px" class="rounded-button" href="privacy-policy">Contact</a>
+</div>
 </section>
 <br><br><br><br>
 <section itemscope itemtype="https://schema.org/SoftwareApplication">
@@ -4332,7 +4332,7 @@ <h3 itemprop="name" style="margin:12px">Volume of a horizontal Frustum Pyramid</
 </section>
 <br><br>
 <section id="square_frustum">
-<h3 itemprop="name" style="margin:12px">Volume of a horizontal square Frustum Pyramid</h3>
+<h3 style="margin:12px">Volume of a horizontal square Frustum Pyramid</h3>
 <br>
 <figure class="imgbox">
     <img class="center-fit" src="squareFrustum.jpeg" alt="Square frustum pyramid">