.head {
    background-image: url('../images/head_bg.jpg');
    background-attachment: fixed;
    background-repeat: no-repeat;
    /*background-size: cover;
-moz-background-size: cover;
-webkit-background-size: cover;*/
    background-repeat: repeat-x;
}

    .head img {
        max-width: 320px;
    }

    .head .head_bg {
        max-width: 1200px;
        margin: 0 auto;
    }

        .head .head_bg img {
            width: 100%;
            height: 100%;
            max-width: 1200px;
            margin: 0 auto;
            min-height: 206px;
        }

.footer {
    margin: 0px auto;
    text-align: center;
    width: 100%;
    height: auto;
    display: inline-block;
    padding: 15px 0;
    background: #4a4747;
    color: #a3a6ab;
    line-height: 35px;
    margin-top: 30px;
}

    .footer a {
        margin: 0 5px;
        color: #a3a6ab;
    }

    .footer .content {
        max-width: 1000px;
        margin: 0 auto;
    }

.main {
    max-width: 1200px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px 0 80px 0;
}

.main_bg {
    max-width: 1920px;
    padding: 20px;
    margin: 0 auto;
    background-color: #f5f5f5;
}

.layui-elem-field {
    max-width: 1050px;
    margin: 0 auto;
    padding: 20px;
}

.readme {
    font-size: 16px;
    line-height: 35px;
    padding: 0px 50px;
}

    .readme p {
        text-indent: 2em;
    }

    .readme .rp {
        text-align: right;
        max-width: 1060px;
        margin-top: 20px;
    }

.layui-elem-field {
    width: 90%;
}