"<meta charset="UTF-8"> <meta name="viewport" > what is this code meaning?

Answer 1

https://www.w3schools.com/tags/tag_meta.asp

Answer 2

hi.utf-8 stands for encoded characters used in your web page. if you are intended to use letters with accent as è ë or ö ò.
viewport uses for many platform as windows, tablets and smartphones.

Answer 3

Thankyou Roberto and Muhid Khairul for your introduction..