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<!DOCTYPE html> <html> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> * {box-sizing: border-box} body {font-family: Arial, Helvetica, sans-serif;} .navbar { width: 100%; background-color: #555; overflow: auto; } .navbar a { float: left; padding: 12px; color: white; text-decoration: none; font-size: 17px; width: 25%; /* 四个等宽的链接 */ text-align: center; } .navbar a:hover { background-color: #000; } .navbar a.active { background-color: #04AA6D; } @media screen and (max-width: 500px) { .navbar a { float: none; display: block; width: 100%; text-align: left; } } </style> <body> <h2>链接宽度相同的响应式导航栏</h2> <p>尝试调整浏览器窗口大小可查看响应式效果。</p> <div class="navbar"> <a class="active" href="#">Home</a> <a href="#">Search</a> <a href="#">Contact</a> <a href="#">Login</a> </div> </body> </html>