这个应该是flex和position冲突的解决方案
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <meta charset="utf-8" /> <style> * { margin: 0; padding: 0; box-sizing: border-box; } html, body { height: 100%; } .wrap { display: flex; flex-direction: column; height: 100%; } header { height: 50px; line-height: 50px; text-align: center; background-color: #ccc; border-bottom: 1px solid #999; } footer { height: 50px; line-height: 50px; text-align: center; background-color: #ccc; border-top: 1px solid #999; } .main { flex: 1; position: relative; } .panel { position: absolute; width: 100%; height: 100%; background-color: #ccc; } </style> </head> <body> <div class="wrap"> <header> 头部 </header> <div class="main"> <div class="panel"> <pre> 父容器position:relative; 子元素position:absolute; width: 100%; height:100%; </pre> </div> </div> <footer> 底部 </footer> </div> </body> </html>
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