HTML : How to detect an empty space on a web page

Описание: HTML : How to detect an empty space on a web page
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

So here is a secret hidden feature I promissed to tell you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
After that, type the word 'awesome' on your keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

Here's a brief description of who I am,
Hello everyone, I'm Delphi.
Let me assist you in answering any questions you may have.
HTML : How to detect an empty space on a web page
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Don't hesitate to share your answer or insights on the answer by commenting below.
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