CSS in shortcode overriding page CSS

I am using plugin My Shortcodes v.2.3 to create a price table. When I specify a list style in the code I am using in the shortcode it overrides the list style in the main menu for the page I am using the shortcode on. I tried using a plugin to add custom css to the site in an effort to reset the li style back to none but the menu is determined to have circles just like the list on the page.

I also tried to create an ul class and set the list style that way for my list but I can’t get the page to apply that when it loads in a browser.

Any other ideas?

o0elvis0o