body {
    font-family: Tahoma,Arial,"Hiragino Sans GB",simsun,sans-serif;
    background: url("../images/register_bg.jpg") top center no-repeat fixed;
}
/*input文字和框齐平*/
.am-form-horizontal .am-form-label {
    padding-top: 5px;
}
.reg_nav a {
    color: #666666;
    font-size: 14px;
    font-weight: 600;
}
.reg_nav a:hover {
    color: #333333;
    font-weight: 600;
}
.max_width {
    max-width: 1200px;
}
.info_bg_su {
    width: 24px;
    height: 24px;
    background-color: #33b244;
    border-radius: 50%;
    color: #ffffff;
    font-weight: bold;
    font-size: 14px;
}
.info_txt_su {
    line-height: 24px;
    text-align: center;
    font-size: 14px;
    color: #33b244
}
.info_bg_fail {
    width: 24px;
    height: 24px;
    background-color: #cccccc;
    border-radius: 50%;
    color: #000000;
    font-weight: bold;
    font-size: 14px;
}
.info_txt_fail {
    line-height: 24px;
    text-align: center;
    font-size: 14px
}
.footer_nav li {
    list-style: none;
    display: inline-block;
    margin-left: auto;
    margin-right: auto;
    color: #c9c9c9;
}
.footer_nav li a {
    color: #4d4d4d;
    font-size: 14px;
}
.footer_nav li a:hover {
    text-decoration: underline;
    text-decoration-color: rgb(28, 28, 28);
    color: #333333;
    font-size: 14px;
}

@media screen and (min-width: 641px) {
    .content {
        margin-top: 40px;
    }
    .reg_box {
        margin-top: 60px;
        margin-bottom: 50px;
        min-height: 407px;
    }
    .tit_img {
        margin-top: -15px;
    }
    .tit_txt {
        font-size: 28px;
        margin-top: 0;
        font-weight: bold;
    }
    .footer_txt {
        font-size: 14px;
        color: #4d4d4d;
    }
}
@media screen and (max-width: 640px) {
    body {
        font-size: 14px;
    }
    select option {
        font-size: 14px;
    }
    :-moz-placeholder { /* Mozilla Firefox 4 to 18 */
        font-size: 14px;
    }

    ::-moz-placeholder { /* Mozilla Firefox 19+ */
        font-size: 14px;
    }

    input:-ms-input-placeholder{
        font-size: 14px;
    }
    input::-webkit-input-placeholder{
        font-size: 14px;
    }
    .am-form-horizontal .am-form-label {
        padding-top: 10px;
        padding-left: 0;
    }
    .content {
        margin-top: 20px;
        padding-left: 15px;
    }
    .reg_box {
        margin-top: 20px;
        margin-bottom: 20px
    }
    .tit_txt {
        font-size: 20px;
        font-weight: bold;
    }
    .footer_txt {
        font-size: 12px;
        color: #4d4d4d;
    }
}