Check relevance of muicss package in frontend.

[gerhean]

What feature(s) would you like to see in RepoSense?

Consider replacing muicss with a more popular package, as it has not been maintained recently (2 years since last PR).

Is the feature request related to a problem?

I generally prefer to use more popular dependencies, as they are usually better documented, and are typically better compatible with other packages.

If possible, describe the solution

Check if there are any easy replacements.

If applicable, describe alternatives you've considered

Bootstrap 5?

Additional context