.wrap {
    position: relative;
}

.wrap .banner .bga,
.wrap .banner .bgb {
    height: 435px;
    background: url(../images/banner1.jpg) no-repeat center top;
}

.wrap .banner .bgb {
    background-image: url(../images/banner2.jpg);
}

.code-box {
    position: absolute;
    width: 277px;
    left: 50%;
    bottom: 54px;
    margin-left: -139px;
    border-radius: 10px;
    background: rgba(255, 255, 255, .6);
    padding: 13px;
}

.code-box .code {
    width: 246px;
    height: 246px;
    border-radius: 10px;
    background: #562c72;
    padding: 13px;
    margin: 0 auto 10px;
}

.code-box .code img {
    width: 100%;
    height: 100%;
    display: block;
}

.code-box .font {
    width: 100%;
    line-height: 42px;
    color: #fff;
    font-size: 26px;
    border-radius: 10px;
    background: rgba(86,44,114,0.63);
    text-align: center;
}