body {
    text-align: center;
    display: grid;
    grid-template-rows: 50px 500px 50px;
    grid-template-columns: 1fr 3fr 1fr;
    grid-template-areas:
      "header header header"
      "nav article aside"
      "footer footer footer";
  }
  header {
    grid-area: header;
   border: solid 1px black;
    padding-top: 11px;
  }
  nav {
    grid-area: nav;
    border: solid 1px black;
    padding-top: 250px;
  }
  article {
    grid-area: article;
    border: solid 1px black;
    padding-top: 250px;
  }
  aside {
    grid-area: aside;
    border: solid 1px black;
    padding-top: 250px;
  }
  footer {
    grid-area: footer;
    border: solid 1px black;
    padding-top: 11px;
  }