css class completion in html template

Hey, 

I am using pycharm with django and angular js. 

In the past, when I wrote html files, the auto completion for the class attribute in html worked fine.

But now , when  Iam trying to add css class to one of my html elements it doesn't show me nothing.

I searched all over the internet and understood that Pycharm will auto complete me only to the classes i linked with <link> element in my html. But, it doesn't make sense because with today's web design, there is only one index.html and a lot of templates, so of course i will not write on each template all the css links. in addition i really remember that i had this option in the past.

what can i do?

Thanks in advance.