Hello again wwwnews!
My hunch tells me that the style that you are using to start with is a part of another plugin, and that it gets loaded after the one that I wrote. The funny thing with styles is that it’s the last one that stands, so it can be tricky to get it right. If you know that a specific plugin is used to create the article-boxes then brows through them in your plugin folder and se if you can find the css-files and the styling of classes cart and quantity. I could try and find an action that is called later in the chain to get my style loaded last, but that is not a good way to go.
If you find the right plugin and the css you want to change, please keep in mind that an update of that plugin will remove any changes you make. You can always clone the plugin, rename it and make your changes to the clone to get around this. Doing that will keep you from getting updates though so take care if it’s a plugin that gets frequent updates.
I want to thank you for the feedback, even though my hope was that your problem was solved. I wanted something “real” to work with and now I got an idea of an admin tool that can be used to search your WordPress files for text to make it easier to find, lets say where a specific class gets its style ?? Let me know how your search goes!
BR,
Tjabalooo