<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>This text is the title of the document</title>
  <link rel="stylesheet" href="mystyles.css">
</head>
<body>
  <div id="grid-container">
    <div id="box-1">
      <div id="header-container">
        <div>Page Title</div>
        <div>Page Menu</div>
      </div>
    </div>
    <div id="box-2">Box 2</div>
    <div id="box-3">Box 3</div>
    <div id="box-4">Box 4</div>
  </div>
</body>
</html>