.banner {
    width: 100%;
    padding-top: 38.7%;
    overflow: hidden;
    position: relative;
    font-size: 0;
    height: auto;
}

.b-img {
    position: absolute;
    left: 0;
    top: 0;
}

.b-img a {
    display: block;
    float: left;
}

.b-list {
    height: 35px;
    margin: 0 auto;
    z-index: 1;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    text-align: center;
    padding-left: 50px;
}

.b-list span {
    display: inline-block;
    cursor: pointer;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ffffff;
    float: left;
    margin: 0 5px;
    _margin: 0 3px;
}

.b-list .spcss {
    background: #7c7c7c;
}

.bar-left .emcss {
    background-position: 0px -100px;
}

.bar-right .emcss {
    background-position: -50px -100px;
}

.banner img {
    width: 100%;
}