HTML Editor:

Hasil :

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8"/>
  <meta name="viewport" content="width=device-width"/>
  <title>Demo HTML</title>
  <style>
    body {
      text-align: center;
      font-family: 'Tahoma',sans-serif
    }
    .post-section #fixed-header{
      background-color:#333;
      position:fixed;
      top:0;
      left:0;
      width:100%;
      display:block;
      transition:top .3s
    }
    .post-section #fixed-header a{
      float:left;
      display:block;
      color:#f2f2f2;
      text-align:center;
      padding:15px;
      text-decoration:none;
      font-size:17px
    }
    .post-section #fixed-header a:hover{
      background-color:#ddd;
      color:#000
    }
  </style>
</head>
<body>
  <div class='post-section'>
  <div id="fixed-header">
    <a href="#home">Fixed Header *</a>
  </div>
  <div style="padding:15px 15px 2500px;margin-top:30px;">
    <p style='color:red'>Fixed header {height:51px}</p>
    <div style="font-size:30px;">
    <p><b>Ini adalah contoh yang menunjukkan <b>hide</b> <b class='code'>fixed header</b> on scroll.</b></p>
    <p>Gulir kebawah halaman ini untuk menyembunyikan header!</p>
    <p>Gulir keatas halaman ini untuk memunculkan header!</p>
    <p>Lorem ipsum dolor dummy text sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
    <p>Lorem ipsum dolor dummy text sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
    </div>
    </div>
</div>
  <script>
    var prevScrollpos = window.pageYOffset;
window.onscroll = function() {
var currentScrollPos = window.pageYOffset;
  if (prevScrollpos > currentScrollPos) {
    document.getElementById("fixed-header").style.top = "0";
  } else {
    document.getElementById("fixed-header").style.top = "-52px";
  }
  prevScrollpos = currentScrollPos;
}
  </script>
</body>
</html>

Coding Blogger Hide fixed header on scroll

HTML Demo

Hide Fixed Header on scroll