fix: responsive for mobile devices

[ihor-romaniuk]

Description

This pull request contains minor style refactoring and fix for responsive in the LMS.

Actual Result:

Feedback is not fully displayed

Expected Result:

Feedback is adaptive and fully displayed

[openedx-webhooks]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.47%. Comparing base (ab0bd00) to head (e1171ed).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #84   +/-   ##
=======================================
  Coverage   92.47%   92.47%           
=======================================
  Files           5        5           
  Lines         226      226           
=======================================
  Hits          209      209           
  Misses         17       17           

Flag	Coverage Δ
unittests	92.47% <ø> (ø)

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