.topic{
	clear:both;
	background:url(images/bg-list.jpg) no-repeat;
	background-position:bottom;
	padding:0px 15px 10px 15px;
}
.topic .item{
	padding:0px 0px 0px 3px;
	clear:both;
	margin-top:5px;
	width:540px;
	float:left;
}
.topic .thumb{
	float:left;
	border:solid 1px #DDD;
	padding:2px;
}
.topic .thumb:hover{
	border-color:#CCCCCC;
	background-color:#EEE;
}
.topic .detail{
	float:right;
	width:430px;
}
.topic .postby{
	color:#666;
	font-size:0.8em;
}