<!DOCTYPE html>

<html lang="en">

<head>
  <meta charset="utf-8">

  <title>Search</title>
  <link href="css/style.css" type="text/css" rel="stylesheet" />
  <script src="js/script.js"></script>
</head>

<body>
  <main>
    <article id="navigation">
      <nav>
        <div>
          <ul>
            <li>Smail</li>
            <li>Images</li>
            <li><img src="" alt="menu"></li>
            <li><a href="#">Sign in</a></li>
          </ul>
        </div>
      </nav>
    </article>

    <article id="center">
      <section id="logo">
        <h1>Search</h1>
      </section>

      <section id="search-box">
        <form class="" action="index.html" method="post">

          <div class="">
            <input type="text" name="search" value="">
          </div>

          <div class="">
            <input type="submit" name="search" value="Search Search">
            <input type="submit" name="search" value="I'm Feeling Lucky">
          </div>

        </form>
      </section>
    </article>
  </main>
</body>

</html>

<!DOCTYPE html>

<html lang="en">

<head>
  <meta charset="utf-8">

  <title>Search</title>
  <link href="css/style.css" type="text/css" rel="stylesheet" />
  <script src="js/script.js"></script>
</head>

<body>
  <nav id="navigation">
    <div>
      <ul>
        <li>Smail</li>
        <li>Images</li>
        <li><img src="" alt="menu"></li>
        <li><a href="#">Sign in</a></li>
      </ul>
    </div>
  </nav>

  <main>
    <article id="center">
      <section id="logo">
        <h1>Search</h1>
      </section>

      <section id="search-box">
        <form class="" action="index.html" method="post">
          <div class="">
            <input type="text" name="search" value="">
          </div>

          <div class="">
            <input type="submit" name="search" value="Search Search">
            <input type="submit" name="search" value="I'm Feeling Lucky">
          </div>
        </form>
      </section>
    </article>
  </main>

  <footer>
    
  </footer>

</body>

</html>

Fix html structure to HTML5
Fix html structure to HTML5
