Thanks @JammyDodger for asking more details of my issue. And Thank you so much @Don Great! . Exactly it is a FakeBook theme we are using. I will try to follow the steps to achieve.
And I would also like to know, is there any other possibility of adding some set of codes in my component header/any other section/or in CSS ?, so that it will be very simplest way right. Let me know if anything is there. Thank You!