Remove Bullets from vcard.

Hi guys I hope you all are good.
This is my first post here on the forum and I hope I will have a good time here.
I have been using WordPress allot as a content system but first now I am getting interesting in learning theme development.
So I am making a small blog theme and I have a dilemma with the vcard on the comments section.I am trying to get rid of all the bullets in the css file.

I am using Firefox and inspect element as a good tool and when I am trying to add list-style-type: none; to the comment-author vcard class nothing happends but when i add list-style to the body section it works fine.Now can I do that or is it completly wrong ?