body {
    font-family: "Helvetica", "Arial", sans-serif;
    margin: 0 auto;
    max-width: 700px;
    min-width: 0;
    padding: 0 10px 25px;
  
    color: #444;
  
    display: grid;
    row-gap: 5px;
    grid-template-columns: auto auto;
    grid-template-rows: 60px auto;
    grid-template-areas:
      "header nav"
      "ct ct"
  }
  
  header {
    margin: 0;
    font-size: 23px;
  
    grid-area: header;
    justify-self: left;
    align-self: end;
  }
  
  nav {
    font-size: 18px;
  
    grid-area: nav;
    justify-self: right;
    align-self: end;
  }
  
  nav a {
    margin-left: 20px;
    text-align: right;
  }
  
  article {
    font-size: 16px;
  
    grid-area: ct;
    border-top: 2px solid gray;
  }
  
  a {
    color: #ffa64d;
  }
  
  h1, h2, strong {
    color: #222;
  }
  
  h1 {
    font-size: 26px;
  }
  h2 {
    font-size: 23px;
  }
  
  @media screen and (max-width: 430px) {
    body {
      grid-template-columns: auto;
      grid-template-rows: minmax(40px,auto) minmax(30px,auto) auto;
      grid-template-areas:
      "header"
      "nav"
      "ct"
    }
  
    header, nav {
      justify-self: center;
      text-align: center;
    }
    nav a {
      margin: 0 10px;
    }
  }