A valid HTML document - Level 01

Each website requires a bit of boilerplate code that tells the browser key information about the page. The first required statement is the doctype. The doctype tells the browser which version of HTML is used for this page. A doctype should look like this: <!DOCTYPE {HTML_VERSION}>. For example, if html is specified as the version, browsers will use HTML5 (the latest version) for rendering. The doctype needs to be at the very beginning of the document.