.poster-main{
      position: relative;
      margin: 50px auto;
    }
    .poster-main .poster-list .poster-item{
      position: absolute;
      left: 0;
      top: 0;
    }
    .poster-main .poster-btn{
      position: absolute;
      top: 0;
      cursor: pointer;
    }
    .poster-main .poster-prev-btn{
      left: 0;
      background: url("../images/btn_l.png") no-repeat center center;
    }
    .poster-main .poster-next-btn{
      right: 0;
      background: url("../images/btn_r.png") no-repeat center center;
    }
    /*设置屏幕滑动上下*/
    .sw-slide img{
      touch-action: block;
    }
        .sw-bullet{
    display: block;
}
.sw-next-prev{
    background-color: rgba(35, 31, 31, 0.39);
}
.sw-next-prev:hover{
    background-color: rgba(35, 31, 31, 0.69);
}
.sw-next-prev{
    color:#ffffff;
}
.swipslider {
    padding-top: 124%;
}

.sw-bullet li{
  width: 160px;
  height: 50px;
  border:1px solid #a1a1a2;
}
.sw-bullet {
    bottom: 91%;
}
.sw-bullet li {
border-radius: 30px;
font-size: 18px;
color:#1a1a1a;
line-height: 46px;
  }
  .sw-bullet li{
    background-color: #f2f3f5;
  }
  .sw-bullet li.active{
    background-color: #3d67f2;
    color:#ffffff;
  }
  .swipslider .sw-slide{
    margin-top: 65px;
  }
  .sw-prev {
    left: 3%;
} 
.sw-next {
    right: 3%;
}