.ptt_t{
	/*
	display:block;
	margin:auto;
	margin-top:0px;
	margin-bottom:0px;
	border:none;
	width:100%;
	*/
	background-color:#ccc;
	height:1px;
	overflow:hidden;
}

.ptt_b{
	/*
	display:block;
	margin:auto;
	margin-top:0px;
	margin-bottom:0px;
	border:none;
	width:100%;
	*/
	background-color:#fff;
	height:1px;
	overflow:hidden;
}