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11.4 Importing External Style Sheets
NN 4, IE 4
11.4.1 Problem
You want to implement a style sheet
strategy across multiple HTML documents in a web site without
embedding explicit CSS code in every document.
11.4.2 Solution
Define a style sheet (with one or more rules) as a separate
.css file and import it into a
document with the <link> tag:
<link rel="stylesheet" type="text/css" href="/image/library/english/10111_
myStyleSheet.css">
The contents of the style sheet file should consist solely of style
sheet rules. Do not include the <style> tags
or the usual nested HTML comments in this file.
11.4.3 Discussion
The Solution shows a cross-browser solution that works with all
CSS-capable browsers. More current browsers that support the CSS2
specification can use an alternative
"at-rule" inside the
document's <style> tags.
The at-rule version of the Solution is:
<style type="text/css">
<!--
@import url(/image/library/english/10111_myStyleSheet.css)
-->
</style>
You can use the @import rule starting with Internet
Explorer 4 and Netscape 6. Some scripters use this import technique
intentionally to exclude Navigator 4, which ignores the
@import rule. You can combine the
@import rule with other page-specific style sheet
rules within the same <style> tag set on a
page.
The filename extension for an external style sheet file should be
.css. The server should also be configured to
send the text/css MIME type with the file for
Netscape 6 and later to process the file correctly (and to adhere to
Internet standards).
11.4.4 See Also
Recipe 11.5 for importing style sheets tailored to a particular
browser or operating system; Recipe 11.6 for changing an imported
style sheet after the page has loaded; Recipe 14.3 for importing HTML
content into a page.
