.listbanner{
    width:100%;
    max-width: 1920px;
    min-width: 1400px;
    margin: 0px auto;
}
.listbanner img{
    width:100%;
}


.content{
    width:1020px;
    height:auto;
    margin: 0px auto;
    overflow: hidden;
    margin-bottom: 30px;
    font-size:14px;
    line-height: 20px;
}
.content .content_banner{
    width:1020px;
    height:80px;
    margin-top:55px;
    margin-bottom: 40px;
    background:url("/A/chanpin/images/chanpin.jpg") no-repeat;
}
.content .content_banner .bread_sub_nav{
 float:right;
 margin-top:50px;
 font-size:12px;

}
.content .content_banner .bread_sub_nav a{
    text-decoration: none;
    color:black;
}
.content .content_banner .bread_sub_nav a:nth-of-type(3){
    font-weight: bold;
}
.content .content_left{
    width:204px;
    height:auto;
    float:left;
    font-size:20px;
}
.content .content_left ul{
    width:204px;
    height:auto;
}
.content .content_left a{
    text-decoration: none;
}
.content .content_left ul li{
    width:204px;
    height:auto;

    font-size:18px;
    text-align: center;
    line-height: 52px;
    margin-top: 1px;

}


.content .content_right{
    width:756px;
    height:auto;
    float:right;
}