Responsive: HeroSection, CardList

> Please read the [`CONTRIBUTING.md`](https://github.com/ComputerSocietyVITC/hms-frontend/blob/master/CONTRIBUTING.md) file before contributing and taking on this issue. **It is mandatory.**

Make the above mentioned components/pages responsive.

> [!WARNING]
> **_DO NOT CHANGE THE FUNCTIONALITY OF THE COMPONENT/PAGE AT ALL. ONLY MODIFY THE TAILWIND CLASSES TO MAKE THEM RESPONSIVE._**
