Answers for "bootstrap 4 navbar center"

bootstrap 4 center div

<div class="d-flex justify-content-start">...</div>
<div class="d-flex justify-content-end">...</div>
<div class="d-flex justify-content-center">...</div>
<div class="d-flex justify-content-between">...</div>
<div class="d-flex justify-content-around">...</div>

bootstrap 4 pagination center

Use the class .justify-content-center on the .pagination ul.

e.g. <ul class="pagination justify-content-center">