<header>
  <h1>City Gallery</h1>
</header>
<nav>
  <a href="#">London</a> |
  <a href="#">Paris</a> |
  <a href="#">Tokyo</a>
</nav>
<section>
  <h1>London</h1>
  <p>London is the capital city of England. It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.</p>
</section>
<aside>
  Some announcement
</aside>

<article>
  <h1>History of the Tower of London</h1>
  <p>text text text text text text text text text text text text text text text text text text text text text text text text
  </p>
</article>

<footer>
  Copyright ©Your Site
</footer>
body {
  margin: 0px;
  font-family: Arial, Verdana;
   display: grid;
  grid-template-columns: 4fr 1fr;
  grid-template-rows: 100px 40px auto auto 50px;
  grid-template-areas:
      "banner banner"
      "nav nav"
      "article1 aside"
      "article2 aside"
      "footer footer";
  min-height: 100vh;
}
header {
  grid-area: banner;
}
nav {
  grid-area: nav;
}
aside {
  grid-area: aside;
}
section {
  grid-area: article1;
}
article {
  grid-area: article2;
}
footer {
 grid-area: footer;
}

header,
nav,
section,
footer,
aside,
article {
  padding: 10px;
  border: solid 1px #DDD;
  box-sizing: border-box;
}

header, footer {
  text-align: center;
  background-color: #EEE;
}
aside {
  background-color: #DDD;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.