我们可以在另一个CSS声明中导入额外的CSS文件。@import规则用于此目的，它在文档中链接样式表。通常在一个样式表依赖于另一个样式表时使用。它在
标签内的@charset声明之后的文档顶部指定。@import规则的语法如下：
@import /*url or list-of-media-queries*/
The media queries can be compound statements which may specify the behavior of the document in different media.
The following examples implement the @import rule −
HTML document −
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
@import url(style.css);
body {
background-color: honeydew;
}
</style>
</head>
<body>
<p>This is demo paragraph one. </p>
<p class="two">This is demo paragraph two.</p>
<p>This is demo paragraph three</p>
</body>
</html>CSS文档：style.css
p { color: navy; font-style: italic; }
.two { color: darkgreen; font-size: 24px; }这将产生以下输出 −
HTML文档 −
<!DOCTYPE html> <html> <head> <link rel="stylesheet" type="text/css" href="style.css"> </head> <body> <div></div> </body> </html>
CSS文档−
div {
height: 50px;
width: 100px;
border-radius: 20%;
border: 2px solid blueviolet;
box-shadow: 22px 12px 3px 3px lightblue;
position: absolute;
left: 30%;
top: 20px;
}这将产生以下输出 −
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