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MULTIPLE STYLE SHEET

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  Multiple Style Sheets If some properties have been set for the same selector in different style sheets, the values will be inherited from the more specific style sheet. For example, an external style sheet has these properties for the h3 selector: h3 { color: red; text-align: left; font-size: 8pt } And an internal style sheet has these properties for the h3 selector: h3 { text-align: right; font-size: 20pt } If the page with the internal style sheet also links to the external style sheet the properties for h3 will be: color: red; text-align: right; font-size: 20pt
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INTERNAL STYLE SHEET

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  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 by using the <style> tag, like this: <head> <style type="text/css"> hr {color: sienna} p {margin-left: 20px} body {background-image: url("images/back40.gif")} </style> </head> The browser will now read the style definitions, and format the document according to it. Note: A browser normally ignores unknown tags. This means that an old browser that does not support styles, will ignore the <style> tag, but the content of the <style> tag will be displayed on the page. It is possible to prevent an old browser from displaying the content by hiding it in the HTML comment element: <head> <style type="text/css"> <!-- hr {color: sienna} p {margin-left: 20px} body {background-image: url("images/back40.gif")} --> </st...
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INLINE STYLE SHEET

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  Inline Styles An inline style loses many of the advantages of style sheets by mixing content with presentation. Use this method sparingly, such as when a style is to be applied to a single occurrence of an element. To use inline styles you use the style attribute in 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 paragraph: <p style="color: sienna; margin-left: 20px"> This is a paragraph </p>
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HOW TO INSERT STYLE SHEET

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  How to Insert a Style Sheet When a browser reads a style sheet, it will format the document according to it. There are three ways of inserting a style sheet: 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 one file. Each page must link to the style sheet using the <link> tag. The <link> tag goes inside the head section: <head> <link rel="stylesheet" type="text/css" href="mystyle.css" /> </head> The browser will read the style definitions from the file mystyle.css, and format the document according to it. An external style sheet can be written in any text editor. The file should not contain any html tags. Your style sheet should be saved with a .css extension. An example of a style sheet file is shown below: hr {color: sienna} p {margin-left: 20px} body {background-image: url...
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CSS COMMENT

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  CSS Comments Comments are used to explain your code, and may help you when you edit the source code at a later date. A comment will be ignored by browsers. A CSS comment begins with "/*", and ends with "*/", like this:   /* This is a comment */ p { text-align: center; /* This is another comment */   color: black; font-family: arial }
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THE CSS CLASS SELECTOR

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  The class Selector With the class selector you can define different styles for the same type of HTML element. Say that you would like to have two types of paragraphs in your document: one right-aligned paragraph, and one center-aligned paragraph. Here is how you can do it with styles: p.right {text-align: right} p.center {text-align: center} You have to use the class attribute in your HTML document: <p class="right"> This paragraph will be right-aligned. </p> <p class="center"> This paragraph will be center-aligned. </p> Note: To apply more than one class per given element, the syntax is: <p class="center bold">   This is a paragraph. </p> The paragraph above will be styled by the class "center" AND the class "bold". You can also omit the tag name in the selector to define a style that will be used by all HTML elements that have a certain class. In the example below, all ...
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CSS GROUPING

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  CSS Grouping You can group selectors. Separate each selector with a comma. In the example below we have grouped all the header elements. All header elements will be displayed in green text  color:  h1,h2,h3,h4,h5,h6 { color: green }
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