.banner{
    position: relative;
    width: 100vw;
    overflow: hidden;
    max-width: 1900px;
    margin: 0;
    padding: 0;
}
.banner img{ max-width: 1920px;}
.img_lis{
    display: flex;
    width: 300vw;
    position: relative;
    left: 0;
    transition: .5s;
}
.img_lis li{
    width: 100%;
    transform:translate3d(0,0,0)
}
.but_lis{
    width: 200px;
    height: 42px;
    display: flex;
    justify-content: space-between;
    position: absolute;
    bottom: 30px;
    left: 50%;
    margin-left: -100px;
}

.but_lis li{
    width: 36px;
    background-repeat: no-repeat;

}

.but_lis .but_active{
    background-repeat: no-repeat;
}
/**
.but_lis li{
    width: 36px;
    background: url(http://www.hbxdsq.cn/templets/1/hbxds//static/images/shuidi2.png) ;
    background-repeat: no-repeat;

}

.but_lis .but_active{
    background: url(http://www.hbxdsq.cn/templets/1/hbxds//static/images/shuidi1.png) ;
    background-repeat: no-repeat;
}
 */