css
页面中的内容条数有由数据库中读取出来，所以条数不固定。 参考
<!DOCTYPE HTML><html lang="en-US"><head> <meta charset="UTF-8"> <title></title> <style type="text/css"> html, body, #wrapper { margin: 0; width: 100%; height: 100%; } .footer { background:#000000; text-indent:-9999px; width:100%; padding:5px 0; height:24px; margin:-50px 0 0 0; position:fixed; } </style></head><body><div id="wrapper"> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> <p>xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p></div> <div class="footer" id="footer"> <p>ffffffffffffffffffff</p> </div></body></html>
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