.large_box{width:100%;}
.large_box img{display:block;}
.small_box{width:100%;overflow:hidden; box-sizing:border-box;display: flex;
align-items: center;padding-top: 20px;}
.small_list{position:relative;width:100%;overflow:hidden;
box-sizing: border-box;background-image:url(../images/libgx.png); background-repeat: repeat-x; background-position:center bottom 30px;}
.small_list ul{overflow:hidden;}
.small_list ul li{position:relative;float:left;width:254px; font-size:20px; text-align:center; color:#595757;cursor:pointer;}
.small_list ul li img{display:block;}
.small_list ul li .bun_bg{ margin:0 auto;width:39px; height:61px;background-image:url(../images/libgx1.png); background-repeat:no-repeat; background-position:center center; margin-top:30px;}
.small_list ul li.on .bun_bg{display:block;background-image:url(../images/libgx2.png); background-repeat:no-repeat; background-position:center center;}
.small_list ul li.on {color:#19b46e;}
.kkbtn{display:block;width:40px;min-width: 40px;height:40px;background-repeat:no-repeat;background-position:center center;cursor:pointer;margin-top: 60px;}
.kkbtn:hover{}
.left_btn{float:left;margin-right:52px;background-image:url(../images/left_btn.png);}
.right_btn{float:right;margin-left:52px;background-image:url(../images/right_btn.png);}