3 HTML Pages has to be transformed into a bootstap site. Bootstrap CSS and JS files has to be stored into the project, not to be linked with CDN provider.
See the project files here:
Make the first in bootsrap and center the content : [login to view URL]
Make second in bootsrap and center the content:[login to view URL]
Transform the third page into bootstap like its specification here: [login to view URL]
Store all bootstrap and java files in the same project, do not link to cdn provider.