<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title></title> <style> .container{ width: 800px; height: 1000px; background: #4c77f2; margin: 0 auto; padding-top: 40px; text-align: center; position: absolute; top:40px; } .header{ width:100%; position: fixed; height: 40px; background: #414141; text-align: center; font-size: 16px; line-height: 40px; } </style></head><body><div class="header">这是页面头部</div><div class="container"> 这是页面内容</div></body></html>
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