Thanks tuanphan. It still looks awkward to be honest.
Also, the embedded file now overwrites the "style shape" at the bottom of the page.
I made an attempt reducing the height's pixels and this helped somewhat, but the content remains difficult to view on mobile devices.
To provide more context, the text and pictures in the document are aligned with right and left margins on desktop, but on mobile devices, the text becomes narrower while the title (which has a larger font size) and pictures retain their size, requiring users to scroll left and right to see the content. Although I tried applying the CSS to the document, this issue persisted.
As a temporary solution, I used CSS to hide the file on mobile devices, but I realize that this is not an optimal solution.
Thank you again for your help.