Question 11 Mark$.........$tag is used to display the content at the center of the web page.AnswerselfView full question & answer→
Question 21 Mark______is an attributes of horizontal rule $<$hr$>$ tag.AnswerselfView full question & answer→
Question 31 Mark$.........$is not the attribute of$<$body$>$ tag in $\text{HTML}.$AnswerselfView full question & answer→