Calculator App using HTML, CSS and Javascript

*Note: To change themes you have to click on the numbers, not on the toggle.

I created this Calculator App using HTML, CSS and Javascript. Basically there are three themes given in the challenge 1.Classic Calculator theme 2.Light theme 3.Dark-purple theme

Hiii I am vicky, I'm an aspiring Frontend developer. Currently I'm learning Javascript. While making this project, for the first time I used CSS-Grid.I learnt how Grids in CSS works. For me the Real challenge was to create the toggle that's responsible for the swapping of themes. After a little bit of research on the internet and Youtube Found this video from E-CODEC.Finally I was able to make the toggle and complete the challenge. I will really appreciate if someone reviews my code and give me some suggestion or point out any mistakes.