This issue arose due to the direct pasting of content from Microsoft Word.
Content copied from Word often contains hidden code that is tailored for Internet Explorer.
The irony lies in the fact that, in this instance, IE is the only browser where it's not functioning correctly.
You must eliminate all unnecessary markup from Word. Your page size is currently 633KB, significantly larger than ideal.
Fortunately, I have discovered a solution to display most of the content properly in IE.
To address this, perform a global find and replace within the HTML source of the page:
Find: --><!--[endif]-->
Replace: <![endif]-->
Implementing this change will ensure that most of the text is visible in IE.