17-1.txt

Javascript语言开发经典教程开发

<STYLE TYPE="text/css">
/* Specify that headings display in blue italic text. */
H1, H2 { color: blue; font-style: italic }

/* 
 * Any element of CLASS="WARNING" displays in bold on an 
 * indented yellow background with a fat red border.
 */
.WARNING { 
        font-weight: bold;
	background-color: yellow; 
	margin-left: 1in;
	margin-right: 1in;
	border-color: red;
	border-width: 8;
	border-style: solid
}

/*
 * A H1 or H2 heading within an element with CLASS="WARNING" 
 * should be centered, in addition to appearing in blue italics.
 */
.WARNING H1, .WARNING H2 { text-align: center }
/* The single element with ID="P23" displays in centered uppercase. */
#P23 {
	text-align: center;
	text-transform: uppercase;
}
</STYLE>

<H1>Cascading Style Sheets Demo</H1>

<DIV CLASS="WARNING">
<H2>Warning</H2>
This is a warning!
Notice how it grabs your attention with its bold text and bright colors.
Also notice that the heading is centered and in blue italics.
</DIV>

<P ID="P23">
This paragraph is centered<BR>
and appears in uppercase letters.<BR>
<SPAN STYLE="text-transform: none">
Here we explicitly use an inline style to override the uppercase letters.
</SPAN>
</P>