Css Lists

List

In HTML, there are two types of lists:

• unordered lists (<ul>) - the list items are marked with bullets
• ordered lists (<ol>) - the list items are marked with numbers or letters

With CSS, lists can be styled further, and images can be used as the list item marker.

Different List Item Markers

The type of list item marker is specified with the list-style-type property:

List - Shorthand property

The list-style property is a shorthand property. It is used to set all the list properties in one declaration:

When using the shorthand property, the order of the property values are:

• list-style-type (if a list-style-image is specified, the value of this property will be displayed if the image for some reason cannot be displayed)
• list-style-position (specifies whether the list-item markers should appear inside or outside the content flow)
• list-style-image (specifies an image as the list item marker)

If one of the property values above are missing, the default value for the missing property will be inserted, if any.

Css Links

Links can be styled in different ways.

Styling Links

Links can be styled with any CSS property (e.g. color, font-family, background, etc.).

In addition, links can be styled differently depending on what state they are in.
The four links states are:

• a:link - a normal, unvisited link
• a:visited - a link the user has visited
• a:hover - a link when the user mouses over it
• a:active - a link the moment it is clicked

When setting the style for several link states, there are some order rules:

• a:hover MUST come after a:link and a:visited
• a:active MUST come after a:hover

Text Decoration

The text-decoration property is mostly used to remove underlines from links:

Background Color

The background-color property specifies the background color for links:

Css Fonts

CSS font properties define the font family, boldness, size, and the style of a text.

CSS Font Families

In CSS, there are two types of font family names:

• generic family - a group of font families with a similar look (like "Serif" or "Monospace")
• font family - a specific font family (like "Times New Roman" or "Arial")

Font Family

The font family of a text is set with the font-family property.
The font-family property should hold several font names as a "fallback" system. If the browser does not support the first font, it tries the next font.
Start with the font you want, and end with a generic family, to let the browser pick a similar font in the generic family, if no other fonts are available.
Note: If the name of a font family is more than one word, it must be in quotation marks, like: "Times New Roman".
More than one font family is specified in a comma-separated list:

Font Style

The font-style property is mostly used to specify italic text.
This property has three values:

• normal - The text is shown normally
• italic - The text is shown in italics
• oblique - The text is "leaning" (oblique is very similar to italic, but less supported)

Font Size

The font-size property sets the size of the text.
Being able to manage the text size is important in web design. However, you should not use font size adjustments to make paragraphs look like headings, or headings look like paragraphs.
Always use the proper HTML tags, like <h1> - <h6> for headings and <p> for paragraphs.
The font-size value can be an absolute, or relative size.
Absolute size:

• Sets the text to a specified size
• Does not allow a user to change the text size in all browsers (bad for accessibility reasons)
• Absolute size is useful when the physical size of the output is known

Relative size:

• Sets the size relative to surrounding elements
• Allows a user to change the text size in browsers

Css Text

Text Color

The color property is used to set the color of the text.
With CSS, a color is most often specified by:

• a HEX value - like "#ff0000"
• an RGB value - like "rgb(255,0,0)"
• a color name - like "red"

Text Alignment

The text-align property is used to set the horizontal alignment of a text.
Text can be centered, or aligned to the left or right, or justified.
When text-align is set to "justify", each line is stretched so that every line has equal width, and the left and right margins are straight

Text Decoration

The text-decoration property is used to set or remove decorations from text.
The text-decoration property is mostly used to remove underlines from links for design purposes:

Text Transformation

The text-transform property is used to specify uppercase and lowercase letters in a text.
It can be used to turn everything into uppercase or lowercase letters, or capitalize the first letter of each word.

Text Indentation

The text-indent property is used to specify the indentation of the first line of a text.

CSS Backgrounds

CSS background properties are used to define the background effects of an element.

CSS properties used for background effects:

• background-color
• background-image
• background-repeat
• background-attachment
• background-position

Background Color

The background-color property specifies the background color of an element.

Background Image

The background-image property specifies an image to use as the background of an element.
By default, the image is repeated so it covers the entire element.

CSS

When a browser reads a style sheet, it will format the document according to the information in the style sheet.

Three Ways to Insert CSS

There are three ways of inserting a style sheet:

• External style sheet
• Internal style sheet
• Inline style

External Style Sheet

An external style sheet is ideal when the style is applied to many pages. With an external style sheet, you can change the look of an entire Web site by changing just one file.
Each page must include a link to the style sheet with the <link> tag. The <link> tag goes inside the head section:

<head>
<link rel="stylesheet" type="text/css" href="mystyle.css">
</head>

An external style sheet can be written in any text editor. The file should not contain any html tags. The style sheet file must be saved with a .css extension. An example of a style sheet file called "myStyle.css", is shown below:

Internal Style Sheet

An internal style sheet should be used when a single document has a unique style. You define internal styles in the head section of an HTML page, inside the <style> tag, like this:

Inline Styles

An inline style loses many of the advantages of a style sheet (by mixing content with presentation). Use this method sparingly!
To use inline styles, add the style attribute to the relevant tag. The style attribute can contain any CSS property. The example shows how to change the color and the left margin of a h1 element:

HTML5 You Tube

Playing a YouTube Video in HTML

To play your video on a web page, you can upload it to YouTube, and then insert the proper HTML code in your web page to display it:

there is two method for display youtube video in a web page

1)Iframe tag

2)Embed  tag