simple static html page that refreshes every 60 seconds for changes, marquees across screen.
download marquee.html
edit the list inside marquee.html how you want
on OBS add browser source and point to marquee.html on that browser setting make width as much as you want, height is recommended 55, hide scrollbars
done
now. if you edit that marquee.html page while its live, it will reload every 60 seconds