Remove blocks grey lines

[AndreaMene]

Hi guys, i'm writing from Italy, and i need your help.

In the site, i've to remove the grey lines between <li> elements in the blocks (manufacturer,informations, etc).

Also i've to reduce the size of the font and reduce the spacing between <li> elements. I've done this in the manufacturer (produttori) block, but the changes are not visible in the information block although they appertain to the same class (list block). Don't ask me why i've to do these readjust but i've been asked from my boss in the company where i work.

What i've to do to solve these problems?

 

Thank you so much