index.html

<!DOCTYPE html>
<html lang="bla">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>BLABLA GENERATOR</title>
  <meta name="description" content="Placeholder text generator, like lorem ipsum but blablabla blabla bla">
  <style>
    body {
      margin: 2rem;
      font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
      font-size: 150%;
      line-height: 1.5;
    }
    button {
      font: inherit; 
    }
    [data-target] {
      max-width: 66.6ch;
    }
    ::selection {
      background: lime;
    }
  </style>
</head>
<body>
  <p><button>Blabla</button></p>
  <div aria-live="polite" data-target></div>
  <script type="module" src="./blabla.js"></script>
</body>
</html>