CSS3 Tutorial 1: Intro to CSS3

CSS stands for Cascading Style Sheets, it was invented to solve one problem, How to display HTML elements. HTML was never intended to contain tags for formatting a document,  It was intended for basic tags like <h> and <p>, When color attributes were added to HTML 3.2 it caused a nightmare for web developers, Each page had to be edited individually every time you wanted to change the color or font, and thus CSS was born.
The way CSS saves work is the ability to use external style sheets, in laymen's terms: having your CSS document separate from you HTML document.

CSS documents are normally saved in external .css files, editing this file allows you to change all your pages at once.

CSS Syntax
A CSS rule has 2 main parts, the selector and the declaration, Here's an example:

h1 {
       color:red;
       font-size:14px;
     }

 The selector is usually the HTML element you want to style. Each declaration consists of a property and a value, The property is the style attribute you want to change and each property has a value.

To add comments to CSS code you use "/*" to open the comment and "*/" to close it.