Dreamwidth style system discussion

All links in my journal are styled with 'border-bottom: 1px solid #someColor;' which also affects the contextual popup image. I don't want a border in this particular case, but I cannot seem to get rid of it.

I've tried .ContextualPopup{border: none !important;} and .ContextualPopup a{border: none !important;}, but it doesn't have any effect. Nor does .ljuser a img{border: none !important;}

What am I overlooking?

( EDIT: Picture of what I mean )

EDIT 2: Like someone pointed out to me, it's not the contextual popup but the user name icon (or user link).

I'd like to have some kind of separator (e.g., at) between the entry date and entry time. What do I have to add to the theme layer? My theme layer is based on Tranquility III. It would also be great if I could customize it via css.

Thanks in advance!

P.S.: Any ETA on when the community's tag system will be updated (it was mentioned in an earlier post.)? I could help adding tags if you need more hands to do this :)