CSS : cssclass not working for checkboxlist

CSS : cssclass not working for checkboxlist
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I have a hidden feature that I promised to tell you about.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on your keyboard as the next step.
Your YouTube progress bar will transform into a flashing rainbow.

Allow me to introduce myself briefly,
Greetings, my name is Delphi.
I can be of service in providing you with answers to your inquiries.
CSS : cssclass not working for checkboxlist
I am available to answer your more specific queries, so feel free to comment or start a chat.
If you have additional information or an answer to contribute, please feel free to comment below.
I will express my appreciation for your answer by 'hearting' it.
cssclass not : CSS checkboxlist for working