Margin in the latest members image

Hi,

I have this in my site in the latest/online/... members block:

<img alt="" style="margin: 0px 5px 10px; width: 55px; height: 55px; background-image: url(http://www.zujalica.com/templates/tmpl_uni/images/icons/man_medium.gif);" src="http://www.zujalica.com/templates/base/images/icons/spacer.gif"/>

And I cant find where can i change "margin: 0px 5px 10px" to "margin: 0px 0px 10px"

And in this: <div class="topmembers_block_3" style="width: 67px;"> to change width to 60.

In the admin, size is defined to 55x55px.

TNX.