My WP sidebar

I have been searching and searching and try and trying to get borders around all my widgets in my sidebar, but have not been successful with it yet. I want to know is there anyway I can put borders around my widgets this is so confusing.

I added…

.widget {
background-color:#cccccc;
border:2px solid #333333;
color:#000000;
margin:15px 0 20px;
padding-bottom:10px;
}

and it still not doing it. Any advice