Correct me some mistakes inside my CV

Question

https://code.sololearn.com/Wobv8YOb3V5a/?ref=app

Answer 1

The placeholder attribute should be inside of the <textarea> tag

Answer 2

Same as the href should be inside of the <a> tag.

Answer 3

You need to learn structure of html.
You need to learn about tags and their attributes.
You need to learn parent and child elements like table, thead, tbody, tr, td.
You need to learn about inline and block elements