Problem embedding an iframe

Hello, I am having a minor problem with size of iframe. I do not know anything about coding so I am sure it is a simple fix but it is beyond me.

I embedded an iframe of a google drive folder on my app. Works perfectly. Shows perfectly fine.

Here are is a link:

Just the way I want except when I go to the same page on my wordpress site where I have the app embedded, it resizes itself to much narrower width. Here is a link to within my site:

Kindly guide me how to fix this and apologies in advance if this has been covered elsewhere on your help form. I looked but could not find.

Thanks and have a great day.

Neither of those links are functional