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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>CSS float Clearfix Example</title>
  <style>
    body {
      font-family: sans-serif;
      padding: 1.5rem;
      line-height: 1.6;
    }

    .clearfix::after {
      content: "";
      display: table;
      clear: both;
    }

    .panel {
      max-width: 480px;
      padding: 0.75rem;
      background: #e2e8f0;
      border-radius: 0.35rem;
    }

    .box {
      float: left;
      width: 46%;
      padding: 1rem;
      text-align: center;
      font-weight: 600;
      border-radius: 0.35rem;
      box-sizing: border-box;
    }

    .box-a {
      background: #93c5fd;
      color: #1e3a8a;
    }

    .box-b {
      background: #86efac;
      color: #14532d;
      margin-left: 8%;
    }

    .footer-note {
      margin-top: 1rem;
      font-size: 0.9rem;
      color: #475569;
    }
  </style>
</head>
<body>
  <h1>Clearfix Example</h1>
  <p>The gray panel background wraps both floated boxes because of the clearfix class.</p>
  <div class="panel clearfix">
    <div class="box box-a">Float A</div>
    <div class="box box-b">Float B</div>
  </div>
  <p class="footer-note">Without clearfix, the panel background might not include the full height of the floats.</p>
</body>
</html>

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CSS float Property - Clearfix Container