.hidden{
   display: none;
}

.show{
    display: block;

}

#Sumbit_bt{
    display: none;
}

.buttons_form{
    display:-webkit-inline-box
}

.btn-success{
    margin:4px;
    font-size: 16px;
}

.form-group, .custom-select{
  font-size: 16px;
}