Using shortcodes plugin- html issues

I have a wordpress site that I used the Ultimate Shortcodes plugin on. The plug-in info can be viewed here:

My site is:
https://www.blackstone.edu

So far as a self-taught coder creating a tabbed chart and formatting with this plug-in has been both easier and more frustrating because it seems to be interfering with my current template, even though I have the custom formatting disabled to prevent this.

https://www.blackstone.edu/chart-test-2/

That is the page I am testing on. The content i insert on the page keeps pushing the left-hand side widget with two the orange button links down below below the frame. If you scroll all the way to the bottom you will see the misplaced info on the left.

I’ve also been creating a simple table from just a basic html code, but for some reason it is creating a huge space between it and the rest of the page content (you can see it down by the orange buttons at the bottom).

What can I do to make my page content stay within the template page instead of resizing and screwing with my template column sizes.

If the short-codes plug-in is the issue, does anyone have a suggestion of how to create a similar tabbed chart to the one already displayed without a plug-in? Thank you for your time