What is use of clearfix and column and how do we know where to insert them in html/css?

Answer 1

dear asker, here are some helpful links:

https://www.w3schools.com/howto/howto_css_clearfix.asp

https://www.w3schools.com/css/css_float_clear.asp

https://css-tricks.com/clearfix-a-lesson-in-web-development-evolution/

https://css-tricks.com/snippets/css/clear-fix/

Answer 2

NEZ Thnx