How to use center tag in notifier blocks (shown in screenshot below)

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#1

How do I use center tag for print via notifier that is shown in fig below.

Please reply!

image
image755×434 37.1 KB

#2

Try this

#3

This tag not works, i already used this.

#4

Try this

<h2 style="text-align: center;">Text</h2>