1. CSS within the tag. 2. CSS within the web page. 3.link referenced CSS. 4.Import the referenced CSS.
The following is the source code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>引入CSS的四种方式</title> <style type="text/css"> /*h2{ color:white;background-color:blue;}*/ /*要想使网页内的CSS生效,必须注释下一行代码*/ @import "import.css"; </style> <link href="alone.css" rel="stylesheet" type="text/css" /> </head> <body> <h1 style="color:white; background-color:yellow">标签内的CSS</h1> <h2>网页内的CSS</h2> <h3>link引用的CSS文件</h3> <h4>import引用的CSS文件</h4> <p>link引用和import引用区别是:link是html加载前就引用,而import是html加载后才引用。举例,采用impor引用,会先显示无样式的页面,然后再把样式放进去。如果用JavaScript动态引用CSS,得使用link引用方式才可实现。</p> </body> </html>
import.css
@charset "utf-8"; /* CSS Document */ h4{ color:#000000; background-color:#009900; }
alone.css
@charset "utf-8"; h3{ color:white; background-color:red;} /* CSS Document */
In line with nature and endless. . .
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