<div class="container">
  <header class="header item">.header</header>
  <nav class="nav item">.nav</nav>
  <main class="main item">.main</main>
  <aside class="aside item">.aside</aside>
  <aside class="aside item">.aside</aside>
  <aside class="aside item">.aside</aside>
  <footer class="footer item">.footer</footer>
</div>

/* -------- Skip this base code -------- */
* { box-sizing: border-box; } .container { display: grid; gap: 1px; padding: 1px; border: 16px solid silver; color: white; } .item { padding: 8px; background: coral; } .header, .main, .footer { background: royalblue; }

.container {
  grid-template-columns: 1fr 2fr 3fr;
  grid-template-areas:
    'header header header'
    'nav    main   main'
    '.      .      .'
    'footer footer footer';
}
.header { grid-area: header; }
.main { grid-area: main; }
.footer { grid-area: footer; }

External CSS

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External JavaScript

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