Bootstrap 4 vertical align text won't center on card

Question

Trying to vertically align the text center in the following card:

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">

<div class="row text-center h-100">
  <div class="col-md-3 text-center my-auto">
    <div class="card card-block justify-content-center" style="height: 120px">
      <div class="card-body">
        This is some text within a card body.
      </div>
    </div>
  </div>
</div>

I am fully aware of the many similar questions here, however I tried various solutions and none of them seems to work for my cards.

I tried "my-auto" on parent, card, and card-body. I tried "d-flex align-items-center h-100" and "justify-content-center". Also tried to play around with the display property. What am I missing?

Answer 1

Here is a solution using bootstrap 4 documentation for flexbox. Read more here

What you need to know,

d-flex -> makes the element a flexbox.

align-items-center - vertically aligns the content.

justify-content-center - horizontally aligns the content.

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">

<div class="row text-center h-100">
  <div class="col-md-3 text-center my-auto">
    <div class="card card-block d-flex" style="height: 120px">
      <div class="card-body align-items-center d-flex justify-content-center">
        This is some text within a card body.
      </div>
    </div>
  </div>
</div>