Internet Brothers - Dynamic HTML - Cascading Style Sheets

Internet Brothers: Helpware for the Cybercommunity - Cascading Style Sheets

Cascading Style Sheets Basics (continued)

Defining a Separate CSS File

Isolate your CSS from your HTML document It's sometimes handy to isolate your styles in a separate file, particularly if you have a lot of them. This approach makes it relatively easy to standardize the appearance of your web pages site-wide. To create a CSS file, just type the style definitions in a separate document, making sure you type only the style definitions, not the <STYLE> tags or anything else. Save the file with an extension of .css. For example, yourcssfile.css.

Referring to the CSS File

The trick to referring to an external CSS is this line:

<LINK REL=STYLESHEET TYPE="text/css" HREF="yourcssfile.css">

The <LINK> tag provides a connection between the document being displayed and the external file. You can put a complete URL in the quotes following the HREF attribute — this example assumes the file is in the same directory as the document that refers to it.

Defining a Style Class

Here's a trick that makes it easy to apply a style to any passage of HTML code you like. Define a CSS that looks like this:

Put them to use by applying them in an HTML document. Here is an example:

<html>
<head>
<title>CSS Style Classes</title>
<STYLE TYPE="text/css">
.blue {color:blue}
.brown {color:brown}
</STYLE>
</head>

<body>
<P>This document illustrates style classes.

<SPAN CLASS=blue>
<P>Am I blue?
</SPAN>

<P>Mud is <SPAN CLASS=brown>brown</SPAN>.

</body>
</html>

This Cascading Style Sheets tutorial was inspired and assisted by David Wall.

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