.body_line {
	border-top-width: 1px;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-top-style: none;
	border-right-style: solid;
	border-bottom-style: none;
	border-left-style: none;
	border-top-color: #000000;
	border-right-color: #000000;
	border-bottom-color: #000000;
	border-left-color: #000000;
}
.head_bg {
	background-image: url(img/arithmetic_r2_c1.jpg);
	background-repeat: no-repeat;
	background-position: center;
}
.head_01 {
	font-size: 14px;
	line-height: 175%;
	text-align: left;
	width: 420px;
	padding-top: 200px;
	padding-right: 0px;
	padding-bottom: 0px;
	padding-left: 55px;
}
.head_02 {
	font-size: 10px;
	text-align: left;
	padding-top: 5px;
	padding-right: 0px;
	padding-bottom: 0px;
	padding-left: 360px;
}
.text12 {
	font-size: 12px;
	line-height: 150%;
	text-align: left;
}
.pro_bg {
	background-image: url(img/arithmetic_r12_c5.jpg);
	background-repeat: no-repeat;
	background-position: center;
}
.pro_text {
	font-size: 12px;
	line-height: 150%;
	text-align: left;
	padding-top: 0px;
	padding-right: 0px;
	padding-bottom: 0px;
	padding-left: 20px;
}


.text14_01 {
	font-size: 14px;
	font-weight: bold;
	text-align: left;
	padding-top: 2px;
	padding-right: 0px;
	padding-bottom: 2px;
	padding-left: 10px;
}
.text12_pre {
	font-size: 12px;
	line-height: 150%;
	text-align: left;
	padding-top: 0px;
	padding-right: 0px;
	padding-bottom: 0px;
	padding-left: 20px;
}

.text14_02 {
	font-size: 14px;
	line-height: 150%;
	font-weight: bold;
	text-align: left;
	padding-top: 2px;
	padding-right: 0px;
	padding-bottom: 2px;
	padding-left: 20px;
}


.text12_r {
	font-size: 12px;
	line-height: 150%;
	color: #FF6600;
	text-align: left;
	font-weight: bold;
}
.text12_b {
	font-size: 12px;
	line-height: 150%;
	color: #3366FF;
	text-align: left;
	font-weight: bold;
}