<html> <head> <title>This is a test!</title> <link ref="stylesheet" type="text/css" href="firstcss.css" /> </head> <body> <div class="blue"> What's happen?</div> <div class="red"> You are so beautiful!!!</div> </body></html>
div.blue {color:blue}div.red {color:red}
ref 改为 rel
rel 是 relation的 缩写
