Visual Editor exploits the new <math display="block"> ...</math> display mode.
Currently this appears center aligned. This conflicts with the convention on the English wikipedia which formats maths equations left aligned and indented one space, by using
:<math>...</math>
this gets translated to a <dd> tag.
Ideally we use the same appearance for existing display maths equations and those produced by VE. We can make the display="block" maths appear like the : format using CSS
.mwe-math-fallback-image-display,
.mwe-math-mathml-display {
margin-left: 1.6em !important;
}
.mwe-math-mathml-display math {
display: inline;
}
which I thinks works in PNG/SVG and MathML.
I've discussed that at https://en.wikipedia.org/wiki/Wikipedia:VisualEditor/Feedback#Indentation_for_mathematical_equations