How to hide the Information button on Catalog Variable while in Portal Environment?

[tahnalos]

I am trying to hide the info button as per the below KB but I am having trouble implementing it.  

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0958089

I am trying to hide the info button as identified by the yellow in the below screenshot:

It says to put the code that is in this KB in the CSS field for sc_cat_item but I put it here and it is not working and the info buttons are still visible.  See below:

Can someone clarify where I am supposed to put this?

The only thing I can think of is that the variable in yellow is a reference that is looking at the fields in red, and those values may change.  Could the refreshing of the variable be causing the info button to pop up continuously?

[Ankur Bawiskar]

@tahnalos 

It has worked in the links I shared

what did you try and what debugging did you perform?

[Ankur Bawiskar]

@tahnalos 

any update to this?

please do share what worked for you well.