Display box around a block of text

Hello,

I would like to format a piece of text as center-aligned and with a box (border) around the text. This way I can highlight important takeaways and key points in my book.

Is this possible to do this in asciidoc? How?

Sid

ping to see if there is any response on this...
Further, my end goal is to generate a PDF not a HTML. And I am using asciidoctorpdf to generate PDF in case it matters.

There is sidebar in asciidoc which is exactly for that

Check asciidoctor manual, but in short it is just text between *** and ***:

https://imgur.com/6Fu9vjm