reduce redundancy

[Anshuman7080]

CSS Variables: Added variables for common colors to promote reusability and easier updates. Consolidation of Styles: Combined similar styles to reduce redundancy (e.g., #contact-box styling). Use of Flexbox: Used align-items: flex-end for better alignment control in the home section. Removal of Unused Comments: Cleaned up comments that were not necessary for understanding the code. Improved Readability: Organized properties and reduced clutter to make the code easier to read.