html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video{scrollbar-width:auto;font-size: 13px;width:100%;}
.login_contain {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}


.login_contain h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 26px;
    max-width: 644px;
    margin: 0 auto 2%;
    text-align: center;
}

.login_contain .form_contain{max-width: 644px;margin:auto;width:100%;}
.login_contain .form_contain .input_box input{width:100%;}
.login_contain .form_contain .input_box,.login_contain .form_contain .first_login .security_input{width:100%;max-width:564px;}
.login_contain .form_contain .first_login .tit::after,.login_contain .form_contain .first_login .tit::before{width:30%;}

@media screen and (max-width: 700px) {
.login_contain .form_contain .first_login .tit::after, .login_contain .form_contain .first_login .tit::before {
    width: 25%;
}
}
@media screen and (max-width: 500px) {
.login_contain .form_contain{padding:10% 4%;}
.login_contain .form_contain .first_login .security_input input{font-size:12px;}
.login_contain .form_contain .first_login .security_input .security_btn{font-size:12px;width:33%;}
}
@media screen and (max-width: 280px) {
.login_contain .form_contain .first_login .tit::after, .login_contain .form_contain .first_login .tit::before {
    width: 14%;
}
}