Discrepancy in github-code and Webpage-code

[Vinitjain1207]

The first button for play and pause has different class in both code and web page resulting in null reference. Better to change it to either playpause or play-pause

url at (https://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Accessibility/Multimedia#creating_custom_audio_and_video_controls)
and html file called custom-control-start.html

should be instead