.type_duan{
    
 width: 245px;
height: 86px;
opacity: 0.6;
float: left;
margin-right: 20px;
margin-bottom: 17px;
margin-top: 2px;
    }
.type_duan:hover{ opacity:1}
.type_duan:hover a{ color:#026805}
.type_duan a{ color:#444;}
.type_duan img{ width:245px; height:86px;}
.type_dan_picture{ position: relative; width:245px; height:86px;}
.type_dan_picture a{ position: absolute; top: 0px; left: 0px; z-index: 0;}
.type_dan_picture a.previous{ z-index: 50;}
.type_dan_picture a.current{ z-index: 100;}