#main_area {
	width: 800px;
	margin-right: auto;
	margin-left: auto;
	padding-top: 9px;
}
#main_area table{
	border-collapse:collapse;
	border:0px;
	width: 100%;
	color: #585657;
	font-size: 90%;
}
#main_area table tr  td{
	border: 1px solid #c8c8c8;
	padding-top: 8px;
	padding-bottom: 8px;
}.tb_ttl {
	background-color: #efefef;
	text-align: center;
}
.posi_name {
	text-align: center;
	width: 25%;
}
.work {
	text-align: left;
	width: 50%;
	padding-left: 16px;
}