These are set of codes i did for my university portal(portal.aiub.edu). features like auto signin, auto teacher review and a good dark theme is available here.
just add your id and password in line no.12,13
for using this code you need to use tampermonkey/violentmonkey in chrome and greasemonkey in firefox
just copy the code and add new script in tampermonkey/violentmonkey/greasemonkey then paste and save it.