Simple Task Tracker Web App

I want to build a small, web-based task management tool that lets me add, edit, mark complete, and delete tasks from a clean, modern interface.
My goal is to provide a useful piece of functionality—specifically task management or tracking—while learning best practices along the way.

What I already bring to the table
• Basic HTML, CSS, and JavaScript knowledge
• Enthusiasm for modern, responsive design
• Openness to new libraries or lightweight frameworks if they simplify the build

What I need from you
• A minimal yet scalable project structure (HTML, CSS, JS or a small framework such as Vue or React)
• Responsive layout that looks sharp on desktop and mobile
• Core CRUD operations for tasks, stored either in localStorage or a simple backend (your recommendation is welcome)
• Clear, well-commented code plus a short README so I can understand and extend it
• A quick walkthrough or inline tips explaining key decisions, because I’m keen to keep improving my skills

If you have experience turning basic concepts into polished, functional web apps, I’d love to collaborate and ship this lightweight task tracker together.