<!DOCTYPE html> <html> <head> <title>HTML 5 DEMO</title> <style> .demo { background-color: yellow; } header, nav, section, article, footer { display: block; } header, nav, section, article, footer { color: white; } header, footer { text-align: center; width: 100%; } header { background-color: red; font-size: 36px; font-weight: bold; } nav { position: fixed; top: 40px; right: 25px; background-color: blue; width: 100px; } section { width: 86%; background-color: gray; padding: 20px; margin: 20px; } footer { background-color: green; font-size: 10px; } </style> </head> <body> <header> header </header> <nav class="demo"> <ul> <li>nav 1</li> <li>nav 2</li> </ul> </nav> <section> <article> article </article> </section> <footer> <p> footer © 2011 </p> </footer> </body> </html>我們將導覽區塊 <nav> 的 class 屬性 (attribute) 設定為 demo
<nav class="demo">
demo 對應到 <style> 中定義的 .demo 規則
.demo { background-color: yellow; }
執行的結果如下:
結果如樣式規則, <nav> 區域是黃色的
Reference : http://pydoing.blogspot.tw/2012/01/html-5-class.html
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