CSS4

 

First of all I would like to start with that there has never been anything like CSS4.
It’s the development of independent modules published after CSS 2.1.

To be more precise and accurate, we might like to explore the content from the following post.
A Word About CSS4

But still in order to explore the latest so called CSS4, we can discuss about the latest selectors that have been developed so as to ease the pain of using javascript / jQuery extensively.

First nice feature I would be discussing would be giving styles to the parent element based on its child element. Consider the following line:

ul > li:hover {color:#ff0000;}

Here li is a child element and ul is a parent element. So, here the color of li will change when list item is hovered.
Introducing the “$” in the syntax. This allows for styling of a parent element (‘ul’ here) based on its child element (‘li’ here). See the example below:

$ul li:hover {color:green;}

Here, if one hovers over a list element, the whole list will turn green. This is a great and dearly needed feature.

Kindly refer to further posts coming in near future to know more features.