.banner_auto{max-width: 640px;min-width: 320px;margin: 0 auto;position:relative}
.banner_auto .arrow-left {background: url(../images/arrows.png) no-repeat left top;position: absolute;left: 10px;top: 50%;margin-top: -15px;width: 17px;  height: 30px;}
.banner_auto .arrow-right {background: url(../images/arrows.png) no-repeat left bottom;position: absolute;right: 10px;top: 50%;margin-top: -15px;width: 17px;height: 30px;}
.banner_auto .pagination {z-index:10;position: absolute;left: 0;text-align: center;bottom:5px; width: 100%;}
.banner_auto .swiper-pagination-switch {display: inline-block;width: 10px;height: 10px;border-radius: 10px;background: #999;box-shadow: 0px 1px 2px #555 inset;margin: 0 3px;cursor: pointer;}
.banner_auto .swiper-active-switch {background: #fff;}