Smooth transition from dark mode to light mode and vice-versa

[GurneeshBudhiraja]

I was referring to the JS cheatsheet and tried switching from light to dark mode. To my curiosity, I found that the transition happens instantly when you click the button to switch between the modes. However, on the other websites, I have seen a smooth transition from one mode to another. Since I have been looking to work on open source I think it is a good issue on which I can start working on.

I would appreciate it if you could assign this issue to me and let me know if this is something you would be accepting as a PR.

Below is the video to help you get a better idea:

Click here to watch the video

Thank you!