calculator-app-main with PWA(Progressive Web Application)

Hey everyone 🙋‍♂️, this is my solution for calculator-app-main challenge. I have tried to take the challenge to another level😃.

What did I try to do?

• I have added some effects 🌟.
• Making the calculator interactive with keyBoard, keypad, mouse, and touch devices ⌨️.
• Working on PWA (prograssive web application) to make it downloadable on Win/Mac/Linux/Android/IOS...etc, so you can use it offline as standAlone application 🚀.
• Adding a button sound 🔉.
• Copy to clipboard button 📋.
• Dinamic calculator screen 📟.
• A very good logic⚛️.

I've tried to make the site as pixel perfect and responsive as possible without using paid designs 💯 and for doing this i used this google chrom extension : PerfectPixel

Please take a look and give me your feedback. Thanks :)