[repilo]

Originally Posted by Turtle91

I just used a basic text-align:center

.ctr {text-align:center}

Unfortunately, it doesn't work well on my Kobo Libra 2. The vertical centering is correct, but it doesn't do the horizontal centering well: the paragraph is centered but a bit shifted to the right.
I have found another way that does work:

html, body { height:100%; margin:0; } /* required */
div.centerVpag { display:table; height:100%; width:100%; text-indent:0;
	text-align:center; }
.centerVrow { display:table-row; }
.centerVcell { display:table-cell; vertical-align:middle;
	text-align:center; text-indent:0; }

  <div class="centerVpag">
    <div class="centerVrow">
      <p class="centerVcell">TEXT CENTERED VERTICALLY AND HORIZONTALLY</p>
    </div>
  </div>

What I least understand is why it is necessary:
html, body { height:100%; margin:0; }
Which I don't like having to apply to the whole epub just to make a little vertically centered text look good.