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          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <style>
    ul.pagination {
      display: inline-block;
      padding: 0;
      margin: 0;
    }

    ul.pagination li {
      display: inline;
    }

    ul.pagination li a {
      color: black;
      float: left;
      padding: 8px 16px;
      text-decoration: none;
      transition: background-color .3s;
      border: 1px solid #ddd;
    }

    .pagination li:first-child a {
      border-top-left-radius: 5px;
      border-bottom-left-radius: 5px;
    }

    .pagination li:last-child a {
      border-top-right-radius: 5px;
      border-bottom-right-radius: 5px;
    }

    ul.pagination li a.active {
      background-color: #4CAF50;
      color: white;
      border: 1px solid #4CAF50;
    }

    ul.pagination li a:hover:not(.active) {
      background-color: #ddd;
    }
  </style>
</head>
<body>

  <h2>圆角边框</h2>
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