CSS is an acronym for Cascading Style Sheet.

Cascading - Declare once use anywhere. Cascade the styling rules to any level, from parent to child level elements.
Style Sheet - Defines style rules.

CSS3 is the extended version of CSS2. CSS3 has arrived with so many new features and enhancements can make any webpage a gem with fewer efforts.

We will cover here CSS selector syntax, properties, browser support, and useful information about its all controls. Its a quick guide so we will cover a more crisp cheat sheet kind of guide rather than the detailed one. To know more about CSS from basic please follow the link -
https://developer.mozilla.org/en-US/docs/Learn/Getting_started_with_the_web/CSS_basics

CSS3 Word Wrap

Word Wrap is a property of CSS3 that is used to break the words and wrap into next line.

Syntax
Word-wrap : normal | break-word | initial | inherit

Normal - break the line at normal word break points.
Break-word - unbreakable word breaks into a new line.
Initial - used to set a default value.
Inherit - used to take computed value.

Example

p {
    width: 100px;
    background: #70ea70;
    word-wrap: break-word;
}

CSS3 Backgrounds

These are used to set the various properties of the background of the webpage.

Property	Value options
background-image	URL \| none
background-attachment	scroll \| fixed
background-image	URL \| none
background-color	color \| transparent
background-size	length \| % \| auto \| cover \| contain
background-position	top right \| top left \| top center \| bottom left \| center \| center right and so on
background-repeat	repeat \| repeat-x \| repeat-y \| no-repeat

Example

#back {
 width: 300px; 
 height: 200px;
 background-position: center bottom, left top;
 background-repeat: no-repeat;
 background-color: #90ee90;
}

Next : CSS 3 Borders, Fonts and Text

(Tech-novate)

A Quick Guide To CSS3 - Introduction, Wordwrap and Backgrounds

CSS3 Word Wrap

CSS3 Backgrounds