Видео ютуба по тегу Why Is The Css Not Rendered When Using Onload Event In The Body Tag

CSS : Onload event not working in select box (Dropdown List Box)
CSS : Onload event not working in select box (Dropdown List Box)
JavaScript: How to use onLoad event trigger in HTML and JavaScript (Tutorial)
JavaScript: How to use onLoad event trigger in HTML and JavaScript (Tutorial)
Why does the Submit Alert Show Inside the onload Function but Not Outside It?
Why does the Submit Alert Show Inside the onload Function but Not Outside It?