Partially in response to
Lin Chiao Feng's post, I just added some class stylings to the global Commons.css.
Following can be used on things like table cells and divs:
class="left" (equivalent to style="text-align: left;")
class="center" (equivalent to style="text-align: center;")
class="right" (equivalent to style="text-align: right;")
class="top" (equivalent to style="vertical-align: top;")
class="middle" (equivalent to style="vertical-align: middle;")
class="bottom" (equivalent to style="vertical-align: bottom;")
Following can be used on a table or a table row and will apply the indicated formatting on all of the cells (td and th) in the table:
class="cells-left"
class="cells-center"
class="cells-right"
class="cells-top"
class="cells-middle"
class="cells-bottom"
You can combine horizontal and vertical alignments, as in class="top right" or class="cells-center cells-bottom". You can even toss in other classes, such as class="wikitable cells-top".