.km_main .banner{
    height: 360px;
    position: relative;
    overflow: hidden;
}
.km_main .banner .images {
    position: relative;
    height: 550px;
    transition: all 500ms ease;
}
.km_main .banner .images .item {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    overflow: hidden;
    transition: opacity 1000ms ease;
}
.km_main .banner-title{
    position: absolute;
    z-index: 1;
    right: 0;
    left: 0;
    color: #fff;
    bottom: 0;
    font-size: 16px;
    display: flex;
    justify-content: center;
    background-image: linear-gradient(0deg,rgba(0,0,0,.36),transparent);
    box-sizing: border-box;
    padding-bottom: 5px;
}
.km_main .banner .images .item img {
    position: relative;
    transform: translate(-50%);
    left: 50%;
    width: 100%;
    height: 360px;
}
.km_main .indicator {
    position: absolute;
    right: 0;
    bottom: 10px;
    display: flex;
}
.km_main .indicator .item {
    width: 8px;
    height: 8px;
    margin: 0 10px;
    border-radius: 50%;
    background-color: #aaa;
    cursor: pointer;
}
.km_main .indicator .item.active {
    background-color: #fff;
}