3.27 stix2 newtxmath

3.27.1 font setting

font_setting.tex

%special set to be able to use breqn package with stix2 ! 
\usepackage{fontspec} 
\setmainfont{STIX Two Text} 
\usepackage[stix2, vvarbb]{newtxmath} 
%\usepackage[stix2]{newtxmath}

3.27.2 full latex file

index.tex

3.27.3 commands to compile

 lualatex index.tex

 make4ht  -ulm default -a debug    index.tex "mathjax,htm"

3.27.4 PDF Output

PDF

3.27.5 HTML Output

HTML

l.779 — TeX4ht warning — \SaveEverypar’s: 2 at \begindocument and 3 \enddocument —