What is CSS:
CSS is an abbreviation for the term "Cascading Style Sheets". CSS was first developed in 1997 as a way to separate the way a Web page looked from the content and behavior. CSS defines how to display the content contained in markup and is stored in style sheets.
What is the Cascade:
In CSS the cascade is like a waterfall, as the user agent encounters style rules it applies them one after the other. The order of styles is:
- browser defaults
- external style sheets
- internal style sheets
- inline styles
- the more specific style selector will take precedence
- h2 is more specific than the universal selector
- h2.class is more specific than h2
- h2.id is more specific than h2.class
Separate Style from Structure:
CSS was generated to separate the look and feel or style of Web pages from the XHTML markup or structure of the pages.
Three Types of CSS Styles:
There are three ways you can add styles to your Web pages:
- inline styles
- embedded styles
- external styles
How to Edit a Style Sheet:
Some people use a CSS style sheet editor.
But it's easy to edit a style sheet using just a text editor.
