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Source: https://seoteamx.bigcartel.com/seoteam6

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  3. <head>
  4.  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  5.  <title>Page Not Found</title>  
  6.  <style type="text/css">
  7.    body {
  8.      font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
  9.      font-weight: normal;
  10.      text-align: center;
  11.      background: #fff;
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  13.  
  14.    #wrap {
  15.      margin: 120px auto;
  16.      padding: 36px 48px;
  17.      width: 450px;
  18.      text-align: center;
  19.      background: #fff;
  20.    }
  21.  
  22.    h1 {
  23.      margin: 0 0 15px 0;
  24.      padding-bottom: 8px;
  25.      border-bottom: 1px solid #eee;
  26.      font-size: 28px;
  27.      font-weight: normal;
  28.      color: #222;
  29.      line-height: 1.5em;
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  31.  
  32.    p {
  33.      margin: 10px 0;
  34.      font-size: 12px;
  35.      font-weight: normal;
  36.      color: #777;
  37.      line-height: 1.5em;
  38.    }
  39.  
  40.    a {
  41.      text-decoration: none;
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  43.  
  44.    a:link, a:visited {
  45.      color: #8eac1a;
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  47.  
  48.    a:hover, a:active {
  49.      color: #708c00;
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  51.  </style>
  52. </head>
  53. <body>
  54.  <div id="wrap">
  55.    <h1>Oops! We couldn&#8217;t find that page.</h1>
  56.    <p><a href="/">&laquo; go back</a></p>
  57.  </div>
  58. </body>
  59. </html>
  60.  
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