Centered the elements on the course containers

[filza2112]

Description

Centered all the elements in the course containers

Fixes #729

Screenshots

Checklist

• [x] Tests have been added or updated to cover the changes
• [x] Documentation has been updated to reflect the changes
• [x] Code follows the established coding style guidelines
• [x] All tests are passing

[filza2112]

@aniketsinha2002 Please review my pull request