Center Sub Footer Text

Howdy,

On this site: https://jencampbellyoga.com; I am trying to center the sub footer text.

This CSS didn't work:

#sub-footer {
text-align: center;
}

And this CSS causes overflow issues:

.mk-footer-copyright {
text-align: center;
width: 100%;
}

Please advise.

Thanks,
Casper

(Bonus attachment I can't delete - please ignore)