html and css

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HTML stands for Hyper Text Markup Language, and really the key is that M for markup.

What this means is that HTML is a way of tagging your existing content, so that the browser or screen readers or search engines know exactly what that content is.

<header>

The header tag is one of the section elements, it's role is to group other HTML elements according to their role on their page. The header element contains all the introductory content on the page typically a title and tagline or navigational elements.

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