@charset "utf-8";

body {
    overflow-x: hidden;
    background: #fff;
    max-width: 750px;
    margin: 0 auto;
}
.index{
    position: relative;
    z-index: 1;
    padding-bottom: 11.333%;
}
.index::after{
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background: url(../images/index-bbg.png) no-repeat;
    background-position: bottom center;
    background-size: 100% auto;
}

.index a{
    display: block;
}

.w100 img{
    display: block;
    width: 100%;
}

.s3{
    padding-top: 4.6666%;
    margin: 0 auto;
    width: 40.933333%;
}