November 2001
Intermediate to advanced
480 pages
16h 4m
English
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Further CSS Topics
In the following sections, we’ve collected some important topics that provide advanced information for interested readers.
Cascading and Inheritance
Cascading
stylesheets allow you to establish a hierarchy of styles. Styles are
inherited from surrounding tags. For example, if you apply a CSS
style using a body type selector, the style
affects everything within the <body> tag of
the document. If you then apply separate styles to, say,
<p> tags within the body, they’ll be
formatted using a combination of the specified styles.
Consider Example 10-5. It shows an embedded
stylesheet that defines type selectors for the
<body> and <p> tags
and a class selector (.pgraph). Note that the
pgraph style is applied to a
<p> element in the HTML document.
Example 10-5. An embedded stylesheet defining stylized text within an HTML document
<html><head><style type="text/css">
<!--
body { font-family: Arial, Helvetica, sans-serif;
color: #0000FF}
p { font-size: 10pt}
.pgraph { font-family: "Times New Roman", Times, serif;
font-size: 12pt; font-style: italic}
a:link { background-color: #003399}
-->
</style></head>
<body bgcolor="#FFFFFF">
<p class="pgraph">This is pgraph text</p>
<p>But this text isn't!</p>
</body></html>In Example 10-5, what format will be used for the
text, “But this text isn’t!” enclosed in
<p> tags? It will be 10pt, blue, Arial
because it inherits the font and color from the
body style rule and uses the point size defined in
the p style rule.
What about the format ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.