How to find WordPress Post/Page ID

[SeaTheme]

There is chassName with page/post id on body wrap.

The className of Page format looks like: page-id-4804

The className of Single Post/Portfolio format looks like: postid-3191

But how to find the ID? Please login wp-admin, go to Pages(or Posts) > All, move the mouse cursor to a page title, there is a status shown on the bottom of the browser:

https://www.dropbox.com/s/wnb1w6e14h90gnp/QQ20170415-105118%402x.jpg?raw=1

Regards!

[Author]

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