Web Development Css
CSS
(CASCADING STYLE SHEET)
What is CSS?
* CSS stands for Cascading Style Sheets
* Styles define how to display HTML elements
* Styles were added to HTML 4.0 to solve a problem
* External Style Sheets can save a lot of work
* External Style Sheets are stored in CSS files
HTML was never intended to contain tags for formatting a document.
HTML was intended to define the content of a document, like:
This is a heading
This is a paragraph.
When tags like , and color attributes were added to the HTML 3.2 specification, it started a nightmare for web developers. Development of large web sites, where fonts and color information were added to every single page, became a long and expensive process.
To solve this problem, the World Wide Web Consortium (W3C) created CSS.
In HTML 4.0, all formatting could be removed from the HTML document, and stored in a separate CSS file.
CSS Syntax
A CSS rule has two main parts: a selector, and one or more declarations:
The selector is normally 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. Each property has a value.
Example
p {color:red;text-align:center;}
CSS Syntax
A CSS rule has two main parts: a selector, and one or more declarations:
The selector is normally 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. Each property has a value.
CSS Example
CSS declarations always ends with a semicolon, and declaration groups are surrounded by curly brackets: p {color:red;text-align:center;}
To make the CSS more readable, you can put one declaration on each line, like this:
Example
p
{
color:red; text-align:center; }
Source: http://www.w3schools.com/css/default.asp
Page 1 of 11
CSS Comments
Comments are used to explain your code, and may help you when you edit the source code at a later date.
Comments are
(CASCADING STYLE SHEET)
What is CSS?
* CSS stands for Cascading Style Sheets
* Styles define how to display HTML elements
* Styles were added to HTML 4.0 to solve a problem
* External Style Sheets can save a lot of work
* External Style Sheets are stored in CSS files
HTML was never intended to contain tags for formatting a document.
HTML was intended to define the content of a document, like:
This is a heading
This is a paragraph.
When tags like , and color attributes were added to the HTML 3.2 specification, it started a nightmare for web developers. Development of large web sites, where fonts and color information were added to every single page, became a long and expensive process.
To solve this problem, the World Wide Web Consortium (W3C) created CSS.
In HTML 4.0, all formatting could be removed from the HTML document, and stored in a separate CSS file.
CSS Syntax
A CSS rule has two main parts: a selector, and one or more declarations:
The selector is normally 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. Each property has a value.
Example
p {color:red;text-align:center;}
CSS Syntax
A CSS rule has two main parts: a selector, and one or more declarations:
The selector is normally 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. Each property has a value.
CSS Example
CSS declarations always ends with a semicolon, and declaration groups are surrounded by curly brackets: p {color:red;text-align:center;}
To make the CSS more readable, you can put one declaration on each line, like this:
Example
p
{
color:red; text-align:center; }
Source: http://www.w3schools.com/css/default.asp
Page 1 of 11
CSS Comments
Comments are used to explain your code, and may help you when you edit the source code at a later date.
Comments are