main.layout {
  min-height: 100vh;
  display: grid;
  max-width: 1000px;
  margin: 0 auto;
  grid-template-columns: 200px 1fr;
  grid-template-rows: 200px 1fr 100px auto;
}

.layout header {
  display: flex;
  grid-row: 1 / 2;
  grid-column: 1 / 3;
}

.layout nav {
  grid-row: 2 / 3;
  grid-column: 1 / 2;
}

.layout article {
  grid-row: 2 / 3;
  grid-column: 2 / 3;
}

.layout footer {
  grid-column: 1 / 3;
  grid-row: 3 / 4;
}

.layout::after {
  grid-column: 1 / 3;
  grid-row: 4 / 5;
}