/** register,login **/
.register-container,.login-container{max-width:500px;margin:100px auto;padding:30px;border-radius:5px;background:#fff}
.register-title,.login-title{text-align:center;margin-bottom:30px;font-size:24px; color:#333}
.form-group{margin-bottom:20px}
.register-footer,.login-footer{margin-top:20px;text-align:center}

.captcha-control{width:55%}
.captcha-image{height:38px}

@media screen and (max-width:450px){
    .register-container, .login-container{margin: 20px auto;}
}