1.
（1）exam1.css文件：
.s1 { font-size: 50px; color: blue; } .s2 { backgoround:gray; font-style: italic; color: red; } .s3 { background-color: gray; }
（2）exam1.html文件
<!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>exam1.html</title> <link rel="stylesheet" type="text/css" href="./exam1.css" /> </head> <body> <font class="s1">梁山排行榜</font> <br/><br/> <span class="s2">宋江</span> <br/><br/> <span class="s3">卢员外</span> <br/><br/> </body> </html>