New navbar UI and logo - Githubissues

Related Issues

This PR is related to the issue #127 .

[x] Code follows the established CODE_OF_CONDUCT guidelines.
[x] Code has been tested thoroughly and passes all tests.
[x] All commit messages are descriptive and follow the established commit message format.
[x] Pull request title follows the established pull request title format.
[x] Pull request description clearly describes the changes included in the pull request.