[BUG] drak mode logo is bigger in size affecting the height of the navbar

**Describe the bug**
The logo for dark mode is huge which is also increasing height of the navbar.
If changes are required,Do assign it to me under GSSOC 2023,chamge will be done : )

**To Reproduce**
Steps to reproduce the behavior:
1. Go to 'Navbar component reduce the size accordingly. '
2. Click on '....'
3. Scroll down to '....'
4. See error

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**
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**Desktop (please complete the following information):**
- OS: [e.g. iOS]
- Browser [e.g. chrome, safari]
- Version [e.g. 22]

**Smartphone (please complete the following information):**
- Device: [e.g. iPhone6]
- OS: [e.g. iOS8.1]
- Browser [e.g. stock browser, safari]
- Version [e.g. 22]

**Additional context**
Add any other context about the problem here.