Style in Otto’s execphp widget

I have a website in development at http://kelvin.asmallorange.com/~wsffa/ and I’m using Otto’s execphp widget, which is wonderful.

But I have a style issue. If you look at the page, you’ll see there are two sidebars, and all the list items in each side bar look the same — except the one generated by the execphp widget. It’s the one titled “Pages”, bottom of left-most sidebar. It has no background color, no dividing lines, and the font is wrong.

There must be some way to make the widget take the same style as the other widgets on the page. I just can’t figure it out, and the theme is very easy to break.

Any help would be greatly appreciated! 🙂