CSS

Cascading Style Sheets (CSS) is a simple design language released in 1996, CSS describes how HTML elements are to be displayed on screen, paper, or in other media.

CSS 3

CSS3 version introduced new features that allowed developers to style HTML elements with less CSS code.

CSS3 features

Easy to use 

CSS3 allows developers to style HTML elements easier.

Responsive design           

CSS3 is the latest version, hence it supports responsive design.

Box Shadow

One of the CSS3 new features is the box-shadow property that adds a shadow to an element. Instead of using multiple images around an item, this property lets you add shadow with a short line of code.

Separate reusable modules       

CSS3 can be breakdown into modules.

Attribute Selectors

CSS3 also introduced new selectors in addition to the ones in CSS2. Instead of applying IDs or classes for styling, developers can select HTML elements according to their attributes.

Performance and speed  

CSS3 is faster than basic CSS.

Animation    

Animation and 3D transformations are supported

Compatibility          

CSS3 is backwards-compatible with former CSS versions. It means that CSS3 features work on web pages using older CSS. Browsers that support CSS2 also represent the modifications with CSS3..

Color 

CSS3 supports HSL RGBA, HSLA and the gradient colors. i.e. #fff supported.

Rounded corners  

CSS3 provide codes for setting rounded gradients and corners

Text shadow and effects 

CSS3 has many advance features like text shadows, visual effects, and a wide range of font style and color.

Opacity         

One of the CSS3 properties called opacity makes elements see-through or completely transparent.