justification
US /ˌdʒʌs.tə.fəˈkeɪ.ʃən/
UK /ˌdʒʌs.tə.fəˈkeɪ.ʃən/

1.
the action of showing something to be right or reasonable
:
•
There is no justification for your rude behavior.
•
He provided a detailed justification for his decision.
2.
the proper alignment of text or images on a page or screen
:
•
Ensure the text has full justification for a clean look.
•
The printer settings allow for left, right, or full justification.