Holy grail layout

For this classic holy grail layout, there is a header, footer, left sidebar, right sidebar, and main content. It's similar to the previous layout, but now with sidebars!

To write this entire grid using a single line of code, use the grid-template property. This enables you to set both the rows and columns at the same time.

The property and value pair is: grid-template: auto 1fr auto / auto 1fr auto. The slash between the first and second space-separated lists is the break between rows and columns.

.parent {
  display: grid;
  grid-template: auto 1fr auto / auto 1fr auto;
}

As in the last example, where the header and footer had auto-sized content, here the left and right sidebar are automatically sized based on their children's intrinsic size. However, this time it is horizontal size (width) instead of vertical (height).

HTML

<div class="parent">
    <header class="section coral">Header</header>
    <div class="left-side section blue">Left Sidebar</div>
    <main class="section green"> Main Content</main>
    <div class="right-side section yellow">Right Sidebar</div>
    <footer class="section coral">Footer</footer>
  </div>

CSS

        .parent {
  display: grid;
  grid-template: auto 1fr auto / auto 1fr auto;
}

header {
  padding: 2rem;
  grid-column: 1 / 4;
}

.left-side {
  grid-column: 1 / 2;
}

main {
  grid-column: 2 / 3;
}

.right-side {
  grid-column: 3 / 4;
}

footer {
  grid-column: 1 / 4;
}