W3School TIY Editor
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<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> body { font-family: Arial, Helvetica, sans-serif; } .badge { background-color: red; color: white; padding: 4px 8px; text-align: center; border-radius: 5px; } </style> </head> <body> <h2>徽章</h2> <p>创建一个徽章并将其固定在标题上：</p> <h2>Example heading <span class="badge">New</span></h2> <h3>Example heading <span class="badge">New</span></h3> <h4>Example heading <span class="badge">New</span></h4> <h5>Example heading <span class="badge">New</span></h5> </body> </html>