CSS的用法：第一行伪元素
使用此元素可将特殊样式添加到选择器中文本的第一行。以下示例演示了如何使用：first-line元素向文档的第一行元素添加特殊效果。
示例
<html>
<head>
<style>
p:first-line {
text-decoration: underline;
}
p.noline:first-line {
text-decoration: none;
}
</style>
</head>
<body>
<p class="noline"> This line would not have any underline because this belongs to nline class.</p>
<p>The first line of this paragraph will be underlined as defined in the CSS rule above. Rest of the lines in this paragraph will remain normal. This example shows how to use :first-line pseduo element to give effect to the first line of any HTML element.</p>
</body>
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