Changing the Background for a certain area!

[ku-med]

Hello,

Is there a way to change the background in this particular area through additional.css



Thanks in advance!

---- Edit ----

I've Figured it out

.forumbit_post .forumlastpost {
 border: 1px solid #e0e0e0;
border-radius: 25px;
    background: #f5f5f5;
    padding: 10px; 
    width: 160px;
    height: 5px; 
}

But i need it to look neat like this one .. mine looks too condensed -.- any help would be appreciated!