Bootstrap and Foundation classes are not working together

Hi I have created a custom template for a client and the want to use the Visual Composer plugin on the pages because they used it on their old website. I built the website using Foundation and the classes are conflicting with each other. Is there a way to push the css from Bootstrap to be less important that the Foundation css and my custom css?

Thanks

https://www.ads-software.com/plugins/showcase-visual-composer-addon/