Why the justify-content-xl-center class used in Bootstrap 4?

1.	Why the justify-content-xl-center class used in Bootstrap 4?
Answer» Display flex items in the center of a flex container on extra-large screen using the justify-content-XL-center class USED in Bootstrap. We have used xl for extra-large screen SIZE: <div class="d-flex justify-content-xl-center bg-primary"> Flex items . . . </div> Above, bg-primary is a contextual class to set background color.

Answer»

Display flex items in the center of a flex container on extra-large screen using the justify-content-XL-center class USED in Bootstrap.

We have used xl for extra-large screen SIZE:

Flex items . . . </div>

Above, bg-primary is a contextual class to set background color.

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