HTML : Multiselect Box with Optgroups: Select one per group

Channel:
India Hey Delphi
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Published on ● Video Link: https://www.youtube.com/watch?v=TnEOEHimVwM


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HTML : Multiselect Box with Optgroups: Select one per group
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

Here's a secret feature that I promised to disclose to you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
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It will change your youtube progress bar into a flashing rainbow.

A brief introduction of myself,
Hello, I am Delphi.
I am capable of providing answers to your questions.
HTML : Multiselect Box with Optgroups: Select one per group
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Box one HTML per Optgroups: with : Multiselect group Select



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