This is a question half pretext and half MathJax involved.
In the generated HTML pages, sometimes the <md> with <mrow>'s, analogously to \begin{align} in LaTeX, have subsequent lines are very close together. If one line has a fraction, for example, the following one may overlap too much.
A quick fix in LaTeX is to put \\[1em], for example, at the end of the line. Or, globally, one can set \addtolength{\jot}{1em}.
I know you could add the \addtolength command for the latex preamble, if building to pdf, but my question regards the HTML documents online.
As a followup question: I like to increase \thinmuskip, \medmuskip, etc in latex which adds more space around binary symbols. Can this be done in the HTML output?
Thanks!
Kyle