[Turtle91]

FWIW, here is the code I use to center a block and then left-align the text. I usually use it for quotes, epigraphs, etc. I haven't had any issues with it, but I also haven't tested it on other devices/apps.

/* Centered & Left-aligned text */
div.quote       {margin:2em 0; 
                 float:left; 
                 position:relative; 
                 left:50%; 
                 clear:both}

div.quote p     {display:block; 
                 text-indent:0; 
                 font-size:.85em; 
                 text-align:left; 
                 position:relative; 
                 left:-50%; 
                 padding:0 2em; 
                 margin:0}

div.quote p.sig {margin:1em 0 0; text-align:right} /* For signature line */



<div class="quote">
<p>This is a paragraph of some sort. It can be of any length. The div will be centered on the page with the text left aligned within the div.</p>
<p>You can adjust the padding to give more/less space on either side.</p>
<p class="sig">From the <em>Memoirs of Dion</em></p>
</div>

Cheers,