CSS is a language that describes the style of an HTML document.
CSS describes how HTML elements are to be displayed on screen, paper, or in other media
What Does CSS Code Look Like?
Why Use CSS?
CSS is used to define styles for your web pages, including the design, layout and variations in display for different devices and screen sizes.
Selector − A selector is an HTML tag at which a style will be applied. This could be any tag like
Property − A property is a type of attribute of HTML tag. Put simply, all the HTML attributes are converted into CSS properties. They could be background, font-size etc.
Value − Values are assigned to properties. For example, background color property can have value either #ef1164 or pink and font-size property can have value 36px etc.