1. Cascading Style Sheets (Introduction)

2. Lecture Overview What is CSS? Facets of CSS
CSS formatting capabilities
New features in CSS3

3. Introduction to CSS
A trend in Web page design is to separate the document structure and content from the document formatting
Cascading Style Sheets are the preferred way to do this
I will use them extensively in this course
I will (try) not to use the old deprecated HTML properties

4. CSS Versions
CSS 3 is the current version. The standard is broken down into several modules
I’ll talk about CSS 3 and where we are as we progress
There some CSS 3 properties that are not yet fully supported by all browsers

5. Facets of CSS We declare styles (style rules)
We select content and apply styles to that selected content (selectors)
We can create styles in different places
Inline / embedded / external
Each of the above is introduced – in turn

6. Style Rules (1)
Style rules format “things” such as tables, paragraphs, lists, and any other HTML 5 element
The things we format are defined by the selector(s)
Selectors are made up of:
Element names
Classes
IDs

7. Style Rules (2) Style rules are made up of a property and a value
A colon separates a property and its value
Multiple property:value pairs are connected with a semi-colon as in property:value; property:value

8. Style Rules (3)
Property / value pairs are enclosed in a declaration block
A selector precedes the declaration block
Here the selector is all <h1> elements

9. .NET and CSS Visual Studio .NET knows how to
Create cascading style sheets
Create custom styles

10. Creating a CSS in .NET From an open project
Click Project, Add New Item
Select Cascading Style Sheet

11. Creating a CSS in .NET (Illustration)

12. Using CSS in .NET .NET validates the <link> element
.NET validates the stylesheet itself
Intellisense also works as you would expect