[CommonHTML/HTML-CSS] in a table, numerator/denominator with line-breaks are left-aligned
(From answering a MathJax User Group posting.)
Within a table, both numerator and denominator of a fraction are left-aligned if they have line-breaks. Only HTML outputs are affected -- the SVG output centers them.
Example:
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
<mtable>
<mtr>
<mtd>
<mfrac>
<mrow>
<mrow>
<mtext mathvariant="italic">aaa</mtext>
</mrow>
<mspace linebreak="newline" />
<mrow >
<mtext mathvariant="italic">b</mtext>
</mrow>
</mrow>
<mrow>
<mrow>
<mtext mathvariant="italic">aa</mtext>
</mrow>
<mspace linebreak="newline" />
<mrow>
<mtext mathvariant="italic">b</mtext>
</mrow>
</mrow>
</mfrac>
</mtd>
</mtr>
</mtable>
</math>