I need to know where to correct this

[Kathryn_]

Well when I post a book a put left and the closing tag.  But when I see it in preview it's perfect but when I post it it goes to middle. How can I correct that?
Is it on the post page?

[Aleksi "Lex" Kilpinen]

Testing.

Left

center

right

Can you describe your issue a bit more, what exactly are you posting? Maybe a screenshot or a link to a post?
The tags seem to work just fine here.

[Kathryn_]

Sure I will show you here

[Kathryn_]

This is in Preview:

Where did King Arthur come from?

Britain lies in the shadows, deserted by its Roman masters. When the Saxons invade at the invitation of Vortigern — traitorous leader of the Britons — the tribes must unite to reclaim the land they see as their birthright.

And in the turmoil of a country torn apart by war, one man must rise to lead them, and become the one true king.

Now when I Post it this is how it looks:

Where did King Arthur come from?

Britain lies in the shadows, deserted by its Roman masters. When the Saxons invade at the invitation of Vortigern — traitorous leader of the Britons — the tribes must unite to reclaim the land they see as their birthright.

And in the turmoil of a country torn apart by war, one man must rise to lead them, and become the one true king.

It's way far from the left side and the right as well:
here is the link to the book I am referring to:
https://ebook-mecca.com/index.php?topic=2294.

[Aleksi "Lex" Kilpinen]

That seems like it's a theme specific thing, the whole content area seems to be centered - you might want to ask the theme author about it.

[Sir Osis of Liver]

<sigh>  It's not a theme problem, it's the bbc tags in the post.  We had resolved this once before, but I see we're back to it again.  Will get to it when on my computer tomorrow.

[Aleksi "Lex" Kilpinen]

Well, from what I can see the actual post is aligned left - So what remains is the theme constraints.

[Sir Osis of Liver]

No, it's tagged [left].  Looks like she fixed it since last night.