Create Tutorial - Learn how to fix a frontend UI bug

[U8NWXD]

Skills covered

Codebase Navigation,
Figure out what code to change,
Debugging, UI Principles, Manual testing of the solution.

Similar issues

20090,
19171,
19905,

Existing relevant pages

oppia/wiki/Find-the-right-code-to-change

oppia/wiki/Get-help#how-to-ask-good-questions

Example

There is a reported bug in the submit feedback modal, in lesson player

The expected behavior was for the modal to appear centered with the background blurred, but it's currently sticking to the navbar and seems to be appearing from the "Feedback" option and there’s no blurring effect.