introduction to_HTML_CSS_presentationpreso.ppt

© 2012 Adobe Systems Incorporated. All Rights Reserved.
LEARNING THE LANGUAGE OF THE WEB
INTRODUCTION TO HTML AND CSS

What is HTML?
 HTML stands for:
 Hypertext
 Markup
 Language
 A markup language, HTML
elements are the building
blocks of web pages.
 HTML elements use tags to
structure content.
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Tags
 HTML elements consist of
tags.
 Tags are enclosed by angle
brackets, like this: <html>
 Tags usually come in pairs, like
this: <title> and </title>
 Tags have a start (or opening)
and end (or closing).
 Tags are not displayed in a
web browser.
 Tags interpret how to display
content between the tags.
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<html>
<head>
<title></title>
</head>
<body>
<h1></h1>
<p></p>
</body>
</html>

Tags
 <html></html> describes the web page.
 <head></head> describes the header.
 <body></body> describes visible page content.
 Common formatting tags:
 <h1></h1> displays a heading, ranging from size 1 (biggest) to 6 (smallest).
 <p></p> formats text as a paragraph.
 <strong></strong> bolds text.
 <em></em> emphasizes text, displays as italics.
 <br> creates a line break.
 Links:
 <a href="http://www.example.com"></a> creates a link to a web page.
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CSS
 CSS stands for:
 Cascading
 Style
 Sheets
 Describes the “look and feel” of
HTML elements on a web page.
 Helps separate document
content (HTML) from document
presentation (CSS).
 Structures presentation
elements such as layout, colors,
and fonts.
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CSS
 A style sheet contains a list of rules about how elements appear on a
page.
 Consists of a selector and a declaration block:
 Selectors tell which markup elements the style applies to.
 A declaration block is a list of property and value pairs that define the style.
 Can be embedded inside the HTML or linked as a separate document.
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h1 {
font-family: Verdana, Geneva, sans-serif;
font-size: 24px;
font-weight: bold;
text-transform: uppercase;
color: #C00;
}

Evolution of HTML and CSS
 HTML and CSS are a collection of web
standards.
 HTML and CSS are a set of best practices
for building websites.
 HTML and CSS are constantly evolving:
 HTML5 is the fifth iteration of HTML and adds
tags to support multimedia elements and
dynamic graphics in modern web browsers.
 CSS3 defines a new set of modular rules for
how HTML content will be presented within
the web browser.
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HTML5 best practices
 Use HTML5 <!doctype html> to tell a browser how to translate.
 Use <meta charset="utf-8"> to tell a browser the character-set.
 Use semantic markup tags <article>, <section>, <header>,
<nav>, and others to bring a higher level of structural meaning to
documents.
 Design and test content across a range of browsers and devices that
support HTML5 capabilities.
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