CSS
CSS or Cascading Style Sheets is a style sheet language used for describing the look and formatting of a document written in HTML or XML. CSS provides the means to control the layout, colors, fonts, and other visual aspects of web pages, separating the presentation from the content and making it easier to maintain and update. With CSS, developers can create styles for different types of devices and screen sizes, ensure that the web pages look good on desktop computes, laptops, smartphones, and other devices. CSS allows for a great deal of creative control and can be used to create complex and sophisticated designs.