h1 {
  text-align: center;
}

h2 {
  text-align: center;
}

header {
  border: black 2px solid;
  grid-row: 1 / 2 ;
  grid-column: 1 / 3 ;
}

nav {
  border: black 2px solid;
  grid-row: 2 / 3 ;
  grid-column: 1 / 2 ;
  height: max-content;
}

main {
  border: black 2px solid;
  grid-row: 2 / 3 ;
  grid-column: 2 / 3 ;
  height: max-content;
}

footer {
  border: black 2px solid;
  grid-row: 3 / 4 ;
  grid-column: 1 / 3 ;
}

.box {
  max-width: 1000px;
  margin: 50px auto;
  display: grid;
  grid-gap: 10px;
  grid-template-columns: 250px minmax(0, 1fr);
}