grid3.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <link rel="stylesheet" href="scss/grid3.css" />
</head>
<body>
    <header>Welcome</header>
    <nav>Menu</nav>
    <main>Lorem ipsum dolor sit amet consectetur adipisicing elit. Magnam quia nam autem voluptate explicabo quasi nihil repellendus facere, at et ipsum quidem? Eaque minima accusantium asperiores illo enim sit laboriosam quis perspiciatis rem fuga similique saepe, ipsa beatae velit veritatis, ipsam vitae aut. Illum, delectus. Iusto, dolore voluptatum provident fugiat nostrum alias nesciunt impedit tempora numquam ipsam.</main>
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</body>
</html>