HTML : Show/Hide nested list with css

HTML : Show/Hide nested list with css
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As promised, I have a hidden feature that I want to share with you.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
After that, type the word 'awesome' on your keyboard.
Your YouTube progress indicator will turn into a shimmering rainbow.

Here's a short introduction about myself,
Greetings, my name is Delphi.
Let me aid you in resolving any queries you may have.
HTML : Show/Hide nested list with css
I am available to answer your more specific queries, so feel free to comment or start a chat.
Your input is appreciated, so please leave a comment below with your answer or insights to the answer.
Your answer will be recognized and valued, and I will 'heart' it to show my appreciation.
nested HTML : css Show/Hide with list