*{margin: 0; padding: 0; box-sizing: border-box;}
/* 轮播图部分 */
.banner_box{position: relative; width: 100%; height: 500px; overflow: hidden; margin: 0 auto;}
.banner_box .img{width: 100%; height: 500px; object-fit: fill;}
.banner_box .prev1{position: absolute; top: 50%; left: 50px; transform: translateY(-50%); width: 50px; height: 50px; background-color: rgba(236, 18, 18, 0.5); border-radius: 50%; z-index: 100;}
.banner_box .next1{position: absolute; top: 50%; right: 50px; transform: translateY(-50%); width: 50px; height: 50px; background-color: rgba(10, 10, 202, 0.5); border-radius: 50%; z-index: 100;}
.banner_box .list{position: absolute; top: 90%; left: 50%; transform: translateX(-50%);}
.banner_box .list .item{width: 20px; height: 20px; background-color: #fff; border-radius: 50%; margin-right: 20px; cursor: pointer;}
.banner_box .list .item.active{background-color: #0A0A0A;}