Update styles.scss

[Imran-imtiaz48]

Updates:

1. Consolidated Common Styles: I grouped similar properties (e.g., hover effects and transitions) to avoid redundancy.
2. Improved Readability: Consistent indentation, spacing, and logical ordering of CSS rules improve readability.
3. Optimized Animations and Transitions: I've standardized transitions across elements to create a consistent user experience.
4. Removed Redundancies: Unnecessary selectors and repeated properties have been removed, making the code cleaner and easier to maintain.
5. Reduced Hardcoded Widths: Using percentage-based widths for progress bars and layouts allows for more flexible, responsive designs.