fix: fixed question icon and its position

[sohailfatima]

Description

Fixed the question icon on read posts and updated the background color to match.
Also fixed the question icon position in the detailed post view.

Before:

After:

[openedx-webhooks]

Thanks for the pull request, @sohailfatima! Please note that it may take us up to several weeks or months to complete a review and merge your PR.

Feel free to add as much of the following information to the ticket as you can:

• supporting documentation
• Open edX discussion forum threads
• timeline information ("this must be merged by XX date", and why that is)
• partner information ("this is a course on edx.org")
• any other information that can help Product understand the context for the PR

All technical communication about the code itself will be done via the GitHub pull request interface. As a reminder, our process documentation is here.

Please let us know once your PR is ready for our review and all tests are green.

⚠️ We can't start reviewing your pull request until you've submitted a signed contributor agreement or indicated your institutional affiliation. Please see the CONTRIBUTING file for more information. If you've signed an agreement in the past, you may need to re-sign. See The New Home of the Open edX Codebase for details.

Once you've signed the CLA, please allow 1 business day for it to be processed. After this time, you can re-run the CLA check by adding a comment here that you have signed it. If the problem persists, you can tag the @openedx/cla-problems team in a comment on your PR for further assistance.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (71a18c5) 92.76% compared to head (7e7f081) 92.76%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #661   +/-   ##
=======================================
  Coverage   92.76%   92.76%           
=======================================
  Files         156      156           
  Lines        3304     3304           
  Branches      903      903           
=======================================
  Hits         3065     3065           
  Misses        219      219           
  Partials       20       20           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[ayesha-waris]

Resolved in PR due to CLA

[openedx-webhooks]

@sohailfatima Even though your pull request wasn’t merged, please take a moment to answer a two question survey so we can improve your experience in the future.