.input-captcha{
    border-radius: 0px;
    text-align: center;
    font-size: 20px;
    letter-spacing:8px;
    font-weight: bold;
}

.navbar-header{
    padding: 9px;
}

.login-container{
   margin-top: 50px;
}

.login-form .text-center{
    margin-bottom: 20px;
}

.login-form .text-center .img{
    margin: 0 auto;
}

#id-group-captcha{
    display:flex;
}

#id-group-captcha .input-group-append{
    display:flex;
}

#captcha{
    width:57%;
}

#img_captcha{
    width: 100px;
    height: 40px;
    border: 0;
}