.banner-box {
    width: 1600px;
    height: 490px;
    margin: 0px auto;
    position: relative;
    text-align: center;
    overflow: hidden;
}

.banner-box .img {
    width: 10000px;
    position: absolute;
    top: 0;
    left: 0;
}

.banner-box .img li {
    float: left;
}

.banner-box .li {
    width: 100%;
    position: absolute;
    left: 0;
    bottom: 10px;
}

.banner-box .li li {
    width: 10px;
    height: 10px;
    background: #ccc;
    border-radius: 50%;
    display: inline-block;
    margin: 0 3px;
    cursor: pointer;
}

.banner-box .but {
    position: absolute;
    top: 50%;
    margin-top: -30px;
    width: 38px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    font-size: 30px;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    font-family: '宋体';
    cursor: pointer;
    display: none;
}

.banner-box:hover .but {
    display: block;
}

.banner-box .but-left {
    left: 0;
}

.banner-box .but-right {
    right: 0;
}

.banner-box .li .index {
    background: #f60;
    width: 30px;
    border-radius: 10px;
}

.banner-box .bar {
    position: absolute;
    left: 0;
    bottom: 0;
    height: 5px;
    background-color: hsla(24, 100%, 50%, 0.5);
}