margin and font style corrected in style.css

[MahdiMohammadiha]

Summarizing the margins in the email class 579b6ff and removing the normal style (which is the default) in the p tag a78beca.
Also document formatting in 18b726c commit.

[jadijadi]

Thank you very much @MahdiMohammadiha , but please remove the out from your PR. Normally we do not add the out directory to the project itself.