Update script.js

[Imran-imtiaz48]

improved version of your JavaScript code enhances readability, maintainability, and efficiency while following modern best practices. The function name toggleElem has been changed to toggleElement for better clarity and professionalism. Instead of traditional for loops, the code now uses the forEach() method, making it more readable and aligned with modern JavaScript standards. Arrow functions have been used consistently to make the code more concise and easier to understand. Additionally, the classList.toggle() method now includes a boolean parameter where applicable, ensuring a more efficient way to add or remove classes based on conditions. The comments have been restructured to clearly define each functionality, improving the overall maintainability of the script. These refinements collectively make the code more professional, easier to manage, and optimized for performance.