.kecheng{
	width: 100%;
	height: auto;
	overflow: hidden;
	margin: 3em 0;
}
.kecheng .kecheng-bf{
	width: 1230px;
	height: auto;
	overflow: hidden;
	margin: 0px auto;
}
.kecheng .kecheng-bf h3{
	text-align: center;
	font-size: 36px;
	padding: 0 0 1em 0;
}
.kecheng .kecheng-bf p{
	line-height: 34px;
}