I guess below image will explain you everything

Forum version: phpbb3
Forum Address: http://pims.online-talk.net/t2-tigecycline-a-new-broad-spectrum-antibiotic

Here is the css code of my forum:

Code:

/* FORUM WRAPPER & BODY
=================================================================*/
#wrap {
margin : 0px auto;
text-align : left;
-moz-box-shadow : 0 0 7px #000;
-webkit-box-shadow : 0 0 7px #111;
}

#wrap {
border-radius: 10px;
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
  }

#wrap {
margin-left: auto;
margin-right: auto;
}

#page-header {
background-image: url('http://2img.net/i/fa/empty.gif');
background-repeat: repeat-x;
border-radius: 0px;
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
width: 922px;
background-position: top center;
top: -4px;
position: relative;
height: 108px;
padding: 0px;
}

.sfdescription {
background-image: url('http://r19.imgfast.net/users/1914/14/51/50/avatars/1-13.png');
}

.headerbar span.corners-top {
display: none;
}

.headerbar span.corners-top span {
display: none;
}

.headerbar span.corners-bottom {
display: none;
}

.headerbar span.corners-bottom spam {
display: none;
}

---

bump