is it mandatory to use p.classname instead of . classname ? what is the difference

Answer 1

But when u write .classname(same paragraph element)..no change wil be observer

Answer 2

It is not necessary to write p.classname .. but in case when u wanted that your class css only aaplied to paragraph element.. then u use that in a scenario when that class used by other elements also.. and it is good practice to use selector with elements because it makes dom searching faster..

Answer 3

if u use p.class .-it specifies wat element you are dealing with...and that that class is assigned to the specific element

Answer 4

if it was a parent element it could work

Answer 5

as in that p.classname will deal with that paragraph element assigned to tht name