<!DOCTYPE html><html><head> <meta charset="utf-8"> <title>富豪排行榜</title> <link type="text/css" href="testcss.css"/></head><body> <font class="style1">富豪排行榜</font><br/> <span class="style2">王健林</span><br/> <span class="style3">馬云</span><br/> <span class="style4">馬化騰</span><br/> <span class="style3">潘石屹</span><br/>? ? <span class="style3">丁磊</span><br/></body></html>下邊是引入的css文件：.style1{ font-size: 50px; color: red;}.style2{ color: red; font-weight: bold;}.style3{ background-color: gray; font-weight: bold;}.style4{ font-weight: bold; text-decoration-style: underline;}
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