body{
        font-family:微软雅黑;
        font-size:14px;
     }
     li{
     	list-style-type: none;
     }
	a{
		text-decoration:none;
		color:black; 
	}
	a:hover{
		text-decoration:none; 
	}
	.product{
		display:none;
	}
	.product-a{
		margin-bottom:30px;
	}
	.prod{
		width:100%;
	}
	.prod li{
		float: left;
		width: 75px;
		height: 25px;
		font-size:14px;
		border-radius: 30px;
		text-align: center;
		line-height: 24px;
		border: 2px solid #d13d3b;
		margin-left: -10px;
		margin-right: 21px;
	}
	.nai{
		float: left;
	}
	.duct{
		width:100%;
	}
	.duct p{
		margin:0 auto;
		font-size: 16px;
	}
	.product-b a img{
        width:130px;
        height:74px;
	}
	.plus{
		width:130px;
		height:40px;
		font-size:20px;
		background:#e1aa43;
		line-height:40px;
		text-align:center;
		border-radius:30px;
		color:#fff;
		margin:0 auto;
		display:block;  
	}
	.duct-a{
		display:none;
	}
	.prod p{
		font-size: 16px;
	}
	.atc{
		background:#d13d3b;
		color:#fff;
	}

	/*大屏开始*/
 @media screen and (min-width: 768px){
	 .nai{
		 float: right;
	 }
	.product{
		width:100%;
		display:block;
	}
	.pro{
		width:1200px;
		margin:0 auto;
		margin-top:20px;
		margin-bottom:30px;
	}
	.pro a{
		font-size:18px;
	}
	 .duct p{
		 margin:0 auto;
		 font-size: 14px;
	 }
	.prod{
		width:1200px;
		margin-bottom:30px;
	}
	.prod p{
		float:left;
		font-size: 16px;
		line-height: 35px;
		padding-right: 20px;
	}
	.prod li{
		float: left;
		width: 113px;
		height: 34px;
		border-radius: 30px;
		text-align: center;
		line-height: 30px;
		margin-right: 80px;
		border: 2px solid #d13d3b;
		font-size: 16px;
		margin-left: 0px;
		/*margin-right: 21px;*/

	}
	.prod li:hover{
        background:#d13d3b;
        color:#fff;
        cursor:pointer; 
	}

	.duct{
		width:1200px;
	}
	.product-b a img{
        width:260px;
        height:148px;
	}
	.shuzi{
		color:#d13d3b;
	}
	.thumbnail:hover{
		border:1px solid #d13d3b;
	}
	.duct-a{
		display:block;
	}
	.plus{
		width:120px;
		height:30px;
		font-size:14px;
		background:#ff6700;
		line-height:30px;
		text-align:center;
		border-radius:15px;
		color:#fff;
		margin:0 auto;
		display:none; 
	}	
}
.product-2,.product-3,.product-4{
	display: none;
}
.thumbnail{
	height: 140px;
}
@media screen and (min-width: 768px){
	.thumbnail{
		height: 196px;
	}
}