源代码 :
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>开源教程(ossoft.cn)</title> <style> body { margin-left:200px; background:#5d9ab2 url('https://www.ossoft.cn/images/mix/img_tree.png') no-repeat top left; } .container { text-align:center; } .center_div { border:1px solid gray; margin-left:auto; margin-right:auto; width:90%; background-color:#d0f0f6; text-align:left; padding:8px; } </style> </head> <body> <div class="container"> <div class="center_div"> <h1>Hello World!</h1> <p>这个实例包含了一些高级的 CSS 方法,后面章节会介绍到。</p> </div> </div> </body> </html>
运行结果