* {
    margin: 0;
    padding: 0;
    list-style-type: none;
}

.banner {
    width: 100%;
    
    position: relative;
    
    overflow: hidden;
}

.banner ul {
    position: absolute;
}

.banner ul li {
    
    width: 100%;
    height: 3.5rem;
    float: left;
    background: no-repeat center center;
    background-size: 7.5rem 3.5rem;
}


.banner ol {
    height: .3rem;
    background: rgba(0, 0, 0, 0.5);
    position: absolute;
    left: 50%;
    bottom: .1rem;
    padding: 0 .1rem;
    border-radius: .15rem;
}

.banner ol li {
    width: .1rem;
    height: .1rem;
    float: left;
    margin: .1rem;
    background: rgba(255, 255, 255, 0.5);
    border-radius: .5rem;
    cursor: pointer;
}

.banner ol .current {
    background: rgba(255, 255, 255, 1);
}

.banner i {
    width: 58px;
    height: 120px;
    position: absolute;
    top: 50%;
    margin-top: -60px;
    cursor: pointer;
    border-radius: 5px;
    display: none;
}