I did actually used line break in between the 5 styles.
But it appeared in one line. Dunno why. I didn't bother changing since other commenters said that they can see the 5 styles, both in post and in comment. Which is the main point.
I know the way to write in 5 or 6 styles in markup text format. But it seems like only the Bold ( Just to check again, I wrote Bold in actual Bold style ) style has a problem of not showing it to my own app interface.