There are several types of editor in the market .Some Editor names are given below. Notepad++. Notepad. TextEdit (MAC). VS Code. Structure of HTML It is the most important part of HTML.Complete Website totally depend on this structure. 1. DOCTYPE Html It is not a Html tag. It is the very first thing in html pages. It is the instruction to the browser about the version of the markup language. It is not a case sensitive. < !DOCTYPE html >: It is a html5 Declaration **Always add Doctype in your code. It helps the browser to render the content correctly.** 2. HTML It is paired a tag. It means that it consist a opening and closing tags both. It is containing a whole data of a html document. Each html document contain one <html> opening and closing tag. *As shown in figure, Head and body are the child of HTML tag.* 3. HEAD It is a container for page header informati...