.bbc{
	width: 100%;
	height: auto;
	margin: auto;
	padding-top: 80px;
}
.user{
	width: 100%;
	height: 603px;
	margin: auto;
	background-image:url(../img/b2b2cbk.png) ;
	background-size:100% 100%;
	position: relative;
}
.user img{
	position: absolute;
	left: calc(50% - 640px);
	top: 0;
	z-index: 1;
}
.userp{
	width: 1180px;
	height: 423px;
	padding-top: 180px;
	padding-left: 100px;
	z-index: 2;
	position: absolute;
	left: calc(50% - 640px);
}
.userp h1{
	color: #FFFFFF;
	font-size: 30px;
	font-weight: 400;
	margin-bottom: 35px;
}
.userp p{
	width: 70%;
	height: 40px;
	line-height: 40px;
	color: #FFFFFF;
	font-size: 20px;
}
.advantage{
	width: 100%;
	height: 800px;
	background: #FFFFFF;
	margin: auto;
}
.advantage_title{
	width: 100%;
	margin: auto;
	height: 200px;
	line-height: 200px;
}
.advantage_title h1{
	font-size: 35px;
	font-weight: 400;
	text-align: center;
}
.advantage_main{
	width: 1280px;
	height: 600px;
	text-align: center;
	margin: auto;
}
.advantage_main_js{
	position: relative;
	top: 100px;
}
.advantage_main li{
	width: 282px;
	height: 600px;
	text-align: left;
	float: left;
	margin-left: 217px;
}
.advantage_main li.advantage_main_li{
	margin-left: 0;
}
.advantage_main p{
	width: calc(100% - 15px);
	height: 30px;
	line-height: 30px;
	font-size: 16px;
	color: #666666;
	padding-left: 15px;
}
.advantage_main h1{
	font-size: 25px;
	font-weight: 400;
	margin-top: 30px;
	margin-left: 15px;
	margin-bottom: 20px;
}
.core{
	background: #F5F5F5;
	height: 950px;
}
/*.core img{
	width: 150px;
}*/
.core_title{
	height: 150px;
	line-height: 150px;
}
.core_main{
	height: 800px;
	position: relative;
	top: 100px;
}
.core_main li{
	text-align: center;
	width: 258px;
	margin-left: 88px;
	height: 360px;
	padding-top: 20px;
}
.advantage_main li.core_li{
	width: 228px;
}
.core_main p{
	width: 100%;
	padding-left: 0;
	text-align: left;
	height: ;
}
.core_main h1{
	margin-left: 0;
}
.advantage_main li.core_lis{
	width: 272px;
}
.advantage_main li img{
	border-radius: 100%;
}
.advantage_main li img:hover{
	box-shadow:0px 5px 8px #c8c8c8;
}