From a personal experience, it is important. When you tell the language of your website, search engines will find easily how to understand your content even if you use some foreign language as example inside main site language. If every WordPress site come with it, it shows how important it is.
HTML stands for Hyper Text Markup Language. A markup language is a set of markup tags. HTML documents are described by HTML tags. Each HTML tag describes different document content.
HTML stands for Hyper Text Markup Language. A markup language is a set of markup tags. HTML documents are described by HTML tags. Each HTML tag describes different document content.
<html lang="en">
<html lang="en-US">
The first lang tag only specifies a language code. The second specifies a language code, followed by a country code.
HTML stands for Hyper Text Markup Language
first, some information about HTML:
To program in HTML we use "tags". They are the ones that give format to the text that is going to appear in your website, make tables, insert images, etc.
HTML (Hypertext Markup Language) is the set of markup symbols or codes inserted in a file intended for display on a World Wide Web browser page. The markup tells the Web browser how to display a Web page's words and images for the user.