/* (A) WHOLE PAGE */
html, body { font-family: arial, sans-serif; }

/* (B) LOGIN FORM */
#login-form{padding:20px;background:#f2f2f2;max-width:320px;margin:0 auto}
#login-form h1{font-size:1.5em;margin:0;color:#9b9b8d}
#login-form label,#login-form input{box-sizing:border-box;display:block;width:100%;margin-top:10px}
#login-form input{padding:10px}
#login-form input[type=submit]{background:#ad4343;color:#fff;border:0;cursor:pointer}

/* (C) INVALID LOGIN */
#bad-login{padding:10px;margin-bottom:10px;background:#ffe7e7;border:1px solid #ff3e3e;color:#c10000;font-weight:700}