CSS : CSS Debugging help - empty div collapsing

CSS : CSS Debugging help - empty div collapsing
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to share a hidden feature with you, and here it is.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on the keyboard.
It will change your youtube progress bar into a flashing rainbow.

A brief introduction of myself,
Hello there, my name is Delphi.
I am happy to help you with your questions.
CSS : CSS Debugging help - empty div collapsing
Let me know if you have more specific queries by commenting or chatting with me.
If you have knowledge to contribute or an answer to provide, we encourage you to comment below.
Your answer will be recognized and appreciated with a 'heart' from me.
help CSS : div Debugging collapsing empty CSS -