Okay I'm having trouble with the coding coming up on my journal without the ads on the sidebar hindering everything but have you tried this

div.typelist-widget widget { margin-top: 0px; }
div.categories-widget widget { margin-top: 0px; }
div.customtext-widge widget { margin-top: 0px; }

That didn't help... I'm really not sure because I don't know too much about Expressive.

You might ask those over at http://everything-lj.livejournal.com/.

So sorry. I mean I know how to do this for Flexible Squares but in Flexible Squares you have the ability to code the types of boxes and then the boxes individually and I'm not sure it that is true of Expressive.