Improve CSS for GitHub ribbon
Improve CSS for GitHub ribbon

- For small screen, preserve margin.
- Use css-beautify

dleehr/organization-RR-Jupyter,butterflyology/rr-intro,Reproducible-Science-Curriculum/rr-literate-programming,butterflyology/rr-intro,RobIsaTeam/courses,Reproducible-Science-Curriculum/rr-literate-programming,dleehr/organization-RR-Jupyter,easyreporting/fmri_reporting,easyreporting/fmri_reporting,dleehr/organization-RR-Jupyter,easyreporting/fmri_reporting,Reproducible-Science-Curriculum/rr-automation,Reproducible-Science-Curriculum/rr-automation,dleehr/organization-RR-Jupyter,easyreporting/fmri_reporting,dleehr/organization-RR-Jupyter,easyreporting/fmri_reporting,dleehr/organization-RR-Jupyter,easyreporting/fmri_reporting,butterflyology/rr-intro,RobIsaTeam/courses,butterflyology/rr-intro,butterflyology/rr-intro,butterflyology/rr-intro