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Semantic Markup in web development: it just a philosophy to how you can build a meaningful web application. Just a right structure to make browsers understand all your app section by HTML5 language. It`s so important in SEO.
Here you can read more: Semantic HTML
Semantic markup is a way of writing and structuring your HTML (Hypertext Markup Language) so that it reinforces the semantics, or meaning, of the content rather than its appearance. In a broader sense, it means that your site architecture.....
Semantic markup in web development means using HTML elements that have both meaning and are presentational for example <h1> changes the way your text looks (presentational) and at the same time it has meaning (heading). The language is HTML
Semantic markup is a way of writing and structuring your HTML (Hypertext Markup Language) so that it reinforces the semantics, or meaning, of the content rather than its appearance. In a broader sense, it means that your site architecture separates presentation from content;
essentially saying that HTML is used for structure and CSS is used for the style of your web design.
Writing semantic markup means understanding the hierarchy of your content and how both users and machines will read it.
A markup language is a computer language that uses tags to define elements within a document. While several markup languages exist, the two most popular are HTML and XML. HTML is a markup language used for creating webpages. The contents of each webpage are defined by HTML tags
XML is used for storing structured data, rather than formatting information on a page
