.i1{
	background: url(../img/techer/1.png) no-repeat top center;
	height: 750px;
}
.i2{
	background: url(../img/techer/2.png) no-repeat top center;
	height: 738px;
}
.i3{
	background: url(../img/techer/3.png) no-repeat top center;
	height: 710px;
}
.i4{
	background: url(../img/techer/4.png) no-repeat bottom center;
	height: 730px;
}
.i5{
	background: url(../img/techer/5.png) no-repeat top center;
	height: 661px;
}
.i6{
	background: url(../img/techer/6.png) no-repeat top center;
	height: 740px;
}
.left,
.right{
	width:700px;
	margin:0 auto;
	font-size: 18px;
	color: #444;
	line-height: 36px;
	padding-top: 240px;
}
.left h2,
.right h2{
	margin-bottom: 40px;
	color: #444
}
.right{
	position: relative;
	left: 450px;
}
.left{
	position: relative;
	right: 150px;
}

.i2 .right{
	padding-top: 170px;
}