Display Video Fullscreen

<!DOCTYPE html><html lang="en">
<head>
  <link href="https://fonts.googleapis.com/css2?family=Dancing+Script&family=Great+Vibes&family=Orbitron&display=swap" rel="stylesheet">
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    body {
      margin: 0;
    }

    .top {
      position: absolute;
      width: 100%;
      border: 0;
      outline: 0;
      background-color: transparent;
      padding: 50px 0;
    }

    .top input {
      display: block;
      margin: 10px auto;
    }

    h1 {
      font-family: orbitron;
      margin: 0 0 50px 0;
    }

    .search {
      outline: 0;
      height: 40px;
      font-size: 16px;
      width: 150px;
      text-align: center;
      border: 0;
      color: red;
      background-color: red;
      color: white;
      border-radius: 10px;
    }

    @media all and (orientation:portrait){
      .search {
        font-size: 16px;
        width: 150px;
        border-radius: 10px;
      }
    }

  @media all and (orientation:landscape) and (max-width:640px){
      .search {
        font-size: 16px;
        width: 150px;
        border-radius: 10px;
      }
}


  @media all and (orientation:landscape) and (min-width:641px) and (max-width:768px){
      .search {
        font-size: 16px;
        width: 150px;
        border-radius: 10px;
      }
    }
  </style>
</head>

<body>

  <button class='top'>

    <h1>Display Video Fullscreen</h1>

    <input class='search' onclick='Style()' type='button' value='Source Code' />
      <input class='search' onclick='web()' type='button' value='HTML' />

  </button>

  <script>
    function Style() {
      window.open('https://1xpto.netlify.app/posts/Display Video Fullscreen/local/index.txt');
    }

    function web() {
      window.open('https://1xpto.netlify.app/posts/Display Video Fullscreen/');
    }
  </script>
</body></html>