main {
  display: grid;
  grid-template-columns: 3fr 5fr 2fr;
  grid-template-rows: 3fr 6fr 2fr;
  grid-gap: 15px;
  height: 100vh;
}

main header {
  grid-column: 1 / 4;
  grid-row: 1;
}

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

body {
  margin: 0;
  padding: 0;
  font-family: 'Merriweather Sans', sans-serif;
}

main > * {
  background-color: lightblue;
  font-size: 24px;
}