math[display=block]{display:block;margin:1em auto;text-align:center}math mtable{display:table;margin:0 auto}math mtr{display:table-row}math mtd{display:table-cell;vertical-align:middle;padding:0 .5em}math mtable>mtr>mtd:last-child{text-align:right;white-space:nowrap;padding-left:1em}