sharing preprint using the journal's template? Publishers such as Elsevier and SAGE provide LaTeX templates for manuscripts to be submitted to their journals. Can one post that version of the paper in our websites if the paper has been accepted to such journals? I am referring to a manuscript that only I have modified and has not been modified by the journal.
If a journal allows authors to post their pre-prints, the general rule—although it is by no means absolute—is that you may use the manuscript in the form in which it was submitted to the journal, but you cannot use the version created by the journal's production staff.

However, you should consult the specific policies of the journal to see exactly what is or is not allowed, as not all journals allow preprints.