.login_field{
    width: 300px;
    margin: 20px auto;
}
.login_field button{
    width: 200px
}

#wrap{
    position: absolute;
    /*margin-top: 120px;*/
    width: 400px;
    height: 300px;
    top: 50%;
    left:50%;
    margin-left: -200px;
    margin-top: -150px;
}
.form-group{
    /*border-color: #0000cc;*/
}
.input-group-addon{
    /*background-color: #436F81;*/
    /*color: #FFFFFF;*/
}