<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Text Properties</title>
  <link rel="stylesheet" href="style.css" />
</head>
<body>
  <header class="page-header">
    <h1>Text Properties</h1>
    <p class="lead">text-align, text-decoration, text-transform, text-indent.</p>
  </header>
  <main class="demo">
    <p class="t-align">Centered text</p>
    <p class="t-under">Underlined text</p>
    <p class="t-upper">uppercase text</p>
    <p class="t-indent">Indented first line of paragraph text.</p>
  </main>
</body>
</html>