CSS stands for Cascading Style Sheets
Styling can be added to HTML elements in 3 ways:
The most common way to add styling, is to keep the styles in separate CSS files. But, in this tutorial, we use internal styling, because it is easier to demonstrate, and easier for you to try it yourself.
|You can learn much more about CSS in our CSS Tutorial.|
CSS styling has the following syntax:
The element is an HTML element name. The property is a CSS property. The value is a CSS value.
Multiple styles are separated with semicolon.
Inline styling is useful for applying a unique style to a single HTML element:
Inline styling uses the style attribute.
This inline styling changes the text color of a single heading:
An internal style sheet can be used to define a common style for all HTML elements on a page.
Internal styling is defined in the <head> section of an HTML page, using a <style> element:
External style sheet are ideal when the style is applied to many pages.
With external style sheets, you can change the look of an entire web site by changing one file.
External styles are defined in an external CSS file, and then linked to in the <head> section of an HTML page:
The CSS color property defines the text color to be used for the HTML element.
The CSS font-family property defines the font to be used for the HTML element.
The CSS font-size property defines the text size to be used for the HTML element.
Every HTML element has a box around it, even if you cannot see it.
The CSS border property defines a visible border around an HTML element:
The CSS padding property defines a padding (space) inside the border:
The CSS margin property defines a margin (space) outside the border:
|The CSS examples above use px to define sizes in pixels.|
All the examples above use CSS to style HTML elements in a general way.
To define a special style for one special element, first add an id attribute to the element:
then define a different style for the (identified) element:
To define a style for a special type (class) of elements, add a class attribute to the element:
Now you can define a different style for all elements with the specified class:
|Use id to address single elements. Use class to address groups of elements.|
In older HTML versions, several tags and attributes were used to style documents.
These tags and attributes are not supported in HTML5!
Avoid using the <font>, <center>, and <strike> elements.
Avoid using the color and bgcolor attributes.
|<style>||Defines style information for a document|
|<link>||Defines a link between a document and an external resource|