/*内页内容开始*/
.bnews{background-image:url(../images/esbnews.jpg);}
.bproduct .content{background-image:url(../images/esbproduct01.png);}
.babout .content{background-image:url(../images/esbabout01.png);}
.bvideo .content{background-image:url(../images/esbvideo01.png);}
.bstrength .content{background-image:url(../images/esbstrength01.png);}
.bcertificate .content{background-image:url(../images/esbcertificate01.png);}
.bbrand .content{background-image:url(../images/esbbrand01.png);}
.bnews .content{background-image:url(../images/esbnews01.png);}
.bcontact .content{background-image:url(../images/esbcontact01.png);}




@media screen and (max-width:1500px){
.header .nav{font-size:16px;}
.header .nav a{margin-right:50px;}
}
@media screen and (max-width:1340px){
.header .nav a{margin-right:40px;}
}
@media screen and (max-width:1230px){
.header .nav a{margin-right:30px;}
}
@media screen and (max-width:1150px){
.header .nav a{margin-right:25px;}
}
@media screen and (max-width:1070px){
.strengthtop li p span{height:50px;}
}


/*移动端*/
@media screen and (max-width: 767px){
.bproduct .content{background-image:url(../images/esbproduct02.png);background-position:35% center;}
.babout .content{background-image:url(../images/esbabout02.png);}
.bvideo .content{background-image:url(../images/esbvideo02.png);}
.bstrength .content{background-image:url(../images/esbstrength02.png);}
.bcertificate .content{background-image:url(../images/esbcertificate02.png);}
.bbrand .content{background-image:url(../images/esbbrand02.png);}
.bnews .content{background-image:url(../images/esbnews02.png);}
.bcontact .content{background-image:url(../images/esbcontact02.png);}
		
	
}