anchor.diff:        margin-bottom: 10px;
       }
   
  -    h2 {
  +    .subhead {
         font-size: 17px;
         line-height: 32px;
         font-weight: 300;
  
positive.code: </head>
  <body>
  
    <div class="container">
      <h1>Shopify App - Installation</h1>
      <h2>Please enter the "myshopify" domain of your store</h2>
  
      <div class="container__form">
        <form method="GET" action="login">
          <input type="text" name="shop" placeholder="blabla.myshopify.com"/>
          <button type='submit'>Install</button>
        </form>
      </div>
    </div>
  
  </body>
  </html>
  
negative.code: <!DOCTYPE html>
  <html lang="en">
  <head>
    <title>Shopify App — Installation</title>
  
    <style>
      html, body { padding: 0; margin: 0; }
  