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Jimmy Lin The iSchool University of Maryland Wednesday, October 8, 2008

LBSC 690 Session #6 CSS, XML/XSLT. Jimmy Lin The iSchool University of Maryland Wednesday, October 8, 2008. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States See http://creativecommons.org/licenses/by-nc-sa/3.0/us/ for details.

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Jimmy Lin The iSchool University of Maryland Wednesday, October 8, 2008

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  1. LBSC 690 Session #6CSS, XML/XSLT Jimmy Lin The iSchool University of Maryland Wednesday, October 8, 2008 This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United StatesSee http://creativecommons.org/licenses/by-nc-sa/3.0/us/ for details

  2. What’s a Document? • Content • Structure • Appearance • Behavior

  3. CSS • Separating content and structure from appearance • Rules for defining styles “cascade” from broad to narrow: • Browser default • External style sheet • Internal style sheet • Inline style

  4. Basics of CSS • Basic syntax: • Example: Causes • Font to be center-aligned • Font to be Arial and black selector {property: value} HTML tag you want to modify… The property you want to change… The value you want the property to take p { text-align: center; color: black; font-family: arial }

  5. Different Ways for Using CSS • Inline style: • Causes only the tag to have the desired properties • Internal stylesheet: • Causes all tags to have the desired properties <p style="font-family:arial; color:blue">…</p> … <head>… <style type="text/css"> p { font-family:arial; color:blue} </style> </head> <body> <p>…</p> …

  6. Customizing Classes • Ability to define customized styles for standard HTML tags: … <head>… <style type="text/css"> p.style1 { font-family:arial; color:blue} p.style2 { font-family:serif; color:red} </style> </head> <body> <p class=“style1">…</p> <p class=“style2">…</p> …

  7. External Style Sheets • Store formatting metadata in a separate file mystyle.css p.style1 { font-family:arial; color:blue} p.style2 { font-family:serif; color:red} … <head>… <link rel="stylesheet" href="mystyle.css" type="text/css" /> </head> <body> <p class=“style1">…</p> <p class=“style2">…</p> …

  8. Why Use CSS? • What are the advantages of CSS? • Why have three separate ways of using styles?

  9. XML and XSLT • XML document: contains the content • DTD (Document Type Definition): defines a well-formed XML document • XSLT (eXtensible Stylesheet Language Transformations): language for converting one XML document into another

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