* { margin: 0; padding: 0;}
.class_sec {
    text-indent: -9999px;
    display: none;
}

li {
    list-style: none;
}
input:focus, select:focus {
    outline: none;
}
.wrap {
    position: relative;
    min-height: 100vh;
}
.box {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -60%);
    
    width: 100%;
    max-width: 800px;
}
.logo {
    width: 90%;
    max-width: 400px;
    height: 103px;
    margin: 120px auto 20px;  
    text-align: center;
    float: none; 
 
    /* background: url('../img/logo_vertical.png') no-repeat center / contain;  */
    /* background: url('../img/logo.png') no-repeat center / contain;  */
}
.container {
    width: 100%;
    /* max-width: 800px; */
    /* width: 800px; */
    overflow: hidden;
    box-shadow: 3px 3px 10px 1px rgba(0,0,0,0.3);
    margin: 0 auto;
    padding: 10px;
    box-sizing: border-box;
}
.frm_title {
    font-size: 24px;
    padding-left: 10px;
    padding-bottom: 15px;
}
.info {
    width: calc((100% - 5px) / 2);
}
.student_info { 
    float: left;
}
#agree_cb_email {
    margin-left: 5px;
}
.member_info #email {
    margin-bottom: 3px;
}
.member_info span {
    font-size: 11px;
    color: #756E6E;
}
.lbl_email {
    display: inline-block;
    font-size: 12px;
    max-width: 100%;
    margin-top: -10px;
    margin-bottom: 10px;
    font-weight: 700;
    color: #6d6d6d;
}
.info_txt {
    width: 100%;
    height: 50px;
    margin-bottom: 10px;
    padding: 10px;
    box-sizing: border-box;
    border: 1px solid #ddd;
}
.pw_warning {
    height: 20px;
    font-size: 11px;
    /* margin-left: 20px; */
    padding: 0px 1px 10px;
    color: #ff0000;
    display: none;
}
.personal_info {
    overflow: hidden;
}
.personal_info > input[type="radio"] {
    display: none;
}
.personal_info > .lbl_sex {
    display: block;
    float: left;
    width: 50px;
    height: 50px;
    line-height: 50px;
    box-sizing: border-box;
    /* padding: 15px; */
    text-align: center;
    border: 1px solid #ddd;
    margin-right: 5px;
    cursor: pointer;
}

.personal_info > #male:checked + .lbl_sex {
    background: #0064ff;
    color: #fff;
}
.personal_info > #female:checked + .lbl_sex {
    background: #ff69b4;
    color: #fff;
}

.class_info {
    float: right;
    position: relative;
    height: 398px;
}
.offline_student {
    /* position: absolute;
    width: 100%;
    height: 382px;
    background: rgba(0,0,0,0.8);
    border-radius: 20px; */
    display: none;
}
.off_title_before {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    padding: 0 10px;
    box-sizing: border-box;
    text-align: center;
    color: #fff;
    font-size: 18px;
}
/* .off_title_after {
    text-align: center; 
    cursor: pointer;
    padding: 10px 0;
}
.off_title_before b, .off_title_after b {
    color: #ff0000;
}
.off_title_after:hover {
    text-decoration: underline;
} */

.sel_class {
    width: 100%;
    padding: 10px;
    height: 50px;
    box-sizing: border-box;
    border: 1px solid #ddd;
    margin-bottom: 5px;
}

fieldset {
    padding: 20px 10px;
    border-color: #d6d6d6;
    border-style: dashed;
    margin-bottom: 16px;
}
fieldset > span {
    font-size: 13px;
    color: #757575;
}
.class_ul {
    overflow: hidden;
    font-size: 14px;
}
.class_ul li {
    width: calc((100% - 1px) / 3);
    height: 30px;
    line-height: 30px;
    float: left;
    cursor: pointer;
}
.class_ul li:hover {
    background: #ddd;
}

#btn_submit {
    width: 100%;
    height: 50px;
    line-height: 50px;
    background: #1da1f2;
    color: #fff;
    border: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    -ms-progress-appearance: none;
    appearance: none;
}
.btn_quit {
    width: 70px;
    height: 50px;
    line-height: 50px;
    background: #1da1f2;
    color: #fff;
    border: none;
    
    /* -webkit-appearance: none;
    -moz-appearance: none;
    -ms-progress-appearance: none;
    appearance: none; */
}


@media screen and (max-width: 1024px) {
    .box {
        position: relative;
        top: 0;
        left: 50%;
        transform: translate(-50%,0);
        width: 100%;
        max-width: 500px;
    }
    .logo {
        margin: 2em auto 1.5em;
        width: 60%;
        min-width: 250px;
    }
    .container {
        width: 95%;  
    }
    .info {
        width: calc((100% - 0px) / 1);
    }
    .class_info { 
        height: auto;
    }
    .offline_student {
        height: 100%;
    }
    .off_title_after {
        margin-bottom: 50px;
    }
}
@media screen and (max-width: 480px) { 
    .logo { 
        margin: 0.5em auto 0.5em;
    }
}






/* 왼쪽 메뉴 */
.l_menu {
    position: fixed;
    width: 250px;
    height: 100vh;
    background: red;
}