WPSP’s section tag generally has multiple selectors aside from the unique id (the one you’re currently using).
Here’s an example format:
<section id="wpsp-208" class=" wpsp-card wp-show-posts-columns wp-show-posts" style="">
id="wpsp-208" attribute’s equivalent as a CSS selector is
#wpsp-208 like what you have now but you can also use the
class="" attribute if you wish to be less specific so you can apply the CSS to multiple lists.
class="", we can see that there are multiple classes. We can use either 1 of them or all of them at once depending on purpose.
This CSS applies to ALL WPSP lists because ALL WPSP lists have the class
Now let’s say you want to set exemptions. We can use the
:not CSS selector and unique
id="" attribute for that.
Example: applying a CSS to ALL WPSP lists EXCEPT #wpsp-7857
That’s the basics. The rest will require familiarity with what class WPSP adds depending on its settings.
For more about selectors, I suggest learning more about CSS. Here’s a good source – https://www.w3schools.com/css/