Hypertext Markup Language (HTML) is the standard markup language for Web pages allows you to create your own Website by adding and organizing your text and images. By using HTML only every web page would be drab plain text and images that flowed straight down the page without any style.
Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML.
CSS is designed to enable the separation of presentation and content, including layout, colors, and fonts. This separation can improve content accessibility, provide more flexibility and control in the specification of presentation characteristics, enable multiple web pages to share formatting by specifying the relevant CSS in a separate .