Need clarification the use of data-inset

Need clarification the use of data-inset


Version JQM 1.2.0

Hate to tap into your busy day for a simple question, however I have tried ti implement data-inset on several pages of my site I'm building as a learning experience. It works great and as explained in the doc, but, on one page it will not work, no matter what I do. I know it's me but I can't figure out what I did. I referenced several books I purchased,and looked at my working pages.

My understanding on inst is if not specified, the default is true. Is that correct? I tried removing data-inset from the collapsible and still had no inset. 

I do not want you to solve my problem, but point me in the right direction.

Code collapsible-set:
  2. <!-- /header -->
  3. <!-- content -->
  4. <div data-role="collapsible-set" data-inset="true">
  5. <div data-role="collapsible" data-iconpos="right" data-mini="true">
  6. <h2>Chicken Cacciatore</h2>
  7. <p>
  8. Fresh Chicken Tenders sauteed with fresh Mushrooms, Peas, Green Peppers, and Black  
  9. Olives in a Red or Marsella Wine served with Spaghetti.
  10. </p>
  11. <table class="alignCtr">
  12. <tr>
  13. <td>Lunch:&nbsp;</td><td><strong>$12.00</strong>&nbsp;</td>
  14. <td>Dinner:&nbsp;</td><td><strong>$15.00</strong></td>
  15. </tr>
  16. </table>
  17. </div>
  18. <div data-role="collapsible" data-iconpos="right" data-mini="true">
  19.     <h2>Chicken Sorrentino</h2>
  20.     <p>
  21. Chicken Breast Bacon, Mushrooms and Olives, baked with Mozzarella Cheese in a Marsela 
  22. Wine Sauce served with Spahgetti.
  23. </p>
  24. <table class="alignCtr">
  25. <tr>
  26. <td>Lunch:&nbsp;</td><td><strong>$12.00</strong>&nbsp;</td>
  27. <td>Dinner:&nbsp;</td><td><strong>$15.00</strong></td>
  28. </tr>
  29. </table>
  30. </div>
  31. <div data-role="collapsible" data-iconpos="right" data-mini="true">
  32.     <h2>Chicken Marsala</h2>
  33.     <p>
  34. Chicken Breast, and sliced Mushroons sauteed in a Marsala Wine Sauce 
  35. Three Fresh Italian Cheeses with Homemade Meat or Mariana Sauce.
  36. </p>
  37. <table class="alignCtr">
  38. <tr>
  39. <td>Lunch:&nbsp;</td><td><strong>$12.00</strong>&nbsp;</td>
  40. <td>Dinner:&nbsp;</td><td><strong>$15.00</strong>/td>
  41. </tr>
  42. </table>
  43. </div>
Thans for taking time to check-out my problen.