For what purpose <!DOCTYPE> , <span>,div, used for???

Question

plz tell be quick plz i couldn't understand this plz tell.... plz give me detailed informatiom about this...

Answer 1

DOCTYPE tells the browser what version of HTML you are using.
Div is an invisible container used for styling and grouping elements.
Span is use for styling text.

Answer 2

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Answer 3

i need an detailed information about these three with examples of each