First you are using the old weaver II column classes that no longer apply to Xtreme.
The proper ones and how to use them is below
https://guide.weavertheme.com/responsive-columns-and-widgets/
But given you have Plus, there is now an even better and easier way to deal with this, and it is the new Flex-column widget. read the tutorial below to see how to use it and how to incorporate it in your content
https://guide.weavertheme.com/x-plus-flex-widget-usage-and-customizations/