💡 [REQUEST] - Custom Scroll Bar and Text Selection

## Feature Request: Custom Text Selection Color and Custom Scrollbar

- [x] I am from GSSoC23.
- [x] I would like to be assigned this task.

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| Section | Description |
|----------------------------|-------------|
| **Concise Description** |The current website interface lacks customization of the text selection color and scrollbar. This feature request aims to add the ability to customize these elements according to the theme of the website.|
| **Solution Proposed** |I suggest adding custom text selection color and scrollbar appearance. This way, users can have better control over the visual aspects of their website experience.|
2. Custom CSS to override the default styles for text selection and scrollbar.\
3. Integrate with popular UI libraries to offer a wide range of pre-designed themes and customization options.|
| **Additional Context** | Customizable themes and interface elements have become essential in modern web applications.
### Code of Conduct

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- [x] I follow the Contributing Guidelines of this project.
- [x] I have checked the current issues for duplicate problems.
- [x] I have read the readme of this repository.