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Thanks. I wish I knew how to center the images.

"Editor" button will appear in the editor. Do you suggest an idea that there appeared alignment? I think after some time, it may appear so, because the editor is still raw.

go to editor and try this < center > text here </ center >

example text here

all commands tested:
https://steemit.com/steem/@cheftony/steem-guide-all-markups-with-raw-html-testing-page