Full form of CSS is Cascading Stylesheet.
CSS saves a lot of work and control the layout of multiple web pages all at once.
-Used to format the layout of a webpages
CSS controls the color, font-size, spacing between elements ,how elements are positioned and laid out ,background color,background images are also be used in CSS.
Cascading means that a style applied to a parent element will also to all children.
Using CSS
CSS can be added to HTML documents in 3 ways like inline,internal and external etc: