CSS is an acronym for Cascading Style Sheets. It works together with html to make the display perfect and WOW.
By using CSS we can optimize image size, text color, table color, link color, hover, transformation, spacing and many other advantages. What is clear, when you find a cool look on the website display it must contain CSS.
In accordance with the meaning of Cascading Style Sheet is very suitable for its use, to give style to the appearance of the website. Therefore CSS is not included in the programming language because it is not a structure but only a style that can enhance the existing structure, namely HTML.