grid-layout-1.html

<html>
    <head>
        <title>CSS Grid Layout - 1</title>
        <link rel='stylesheet' href='grid-layout-1.css'/>
  </head>
  <body>
      <div class="layout">
          <div class="child">a</div>
          <div class="child">a</div>
          <div class="child">a</div>
          <div class="child">a</div>
          <div class="child">a</div>
          <div class="child">a</div>
          <div class="child">a</div>
     </div>
  </body>
</html>