I have a question about using the template in the process of sending mail using cakephp

I have a question about using the template in the process of sending mail using CakePHP(gmail). Details are as follows :
In the my file PostsController exist :
public function email(){

     $email = new CakeEmail("smtp");
     $email->template('template1','template2');

     ...

}

Email has been sent successfully.
There is differences between the two files : template1 vs  template2  when displayed in the inbox of gmail.
I I have the format CSS in the file template1 when sending mail does not display CSS .
Hope to receive help from members. Thank you all !

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