Relative URLs

URL
https://www.archives.gov/historical-docs/voting-rights-act

• Scheme
  https://www.archives.gov/historical-docs/voting-rights-act
• Host
  https://www.archives.gov/historical-docs/voting-rights-act
• Path
  https://www.archives.gov/historical-docs/voting-rights-act

Absolute and Relative Locations

• Where does https://summer.harvard.edu/ go to?
• How about /images/mug.png ?
• What about ../styles/site.css ?