What is CSS? Understanding the coding language that styles a webpage beyond plain text and photos

CSS is a programming language that lets you customize the color, font, and layout of an HTML-coded website.
ZDNet

Hackers hide web skimmer inside a website's CSS files

Over the past two years, cybercrime groups have used quite an assortment of tricks to hide credit card stealing code (also known as web skimmers or Magecart scripts) inside various locations of an ...