how to styllish the error message in codeigniter | Learning Curve- Perfect Tutorial for the beginers

Please Refer this link

http://mydoubts.in/blog/username-validation-using-codeigniter-check-the-username-in-the-databse-for-validating-a-user/

and do the below steps on the mentioned files

step1:add the below code into the view file uservalidationpage.php

<style TYPE="text/css">
.error{
 color: #808000
}
</style>

.error{

color: #808000

}

</style>

step2:add the below code in controllers/usernamevalidation.php

$this->form_validation->set_error_delimiters(‘

‘, ‘

‘);