/* mobile first max-width 280px */
html {
  height: 100%;
}
body {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  margin: 0;
  padding: 0;
}

a {
  text-decoration: none;
  color: #fff;
  margin: 0;
  padding: 0;
}

header {
  width: 100%;
  height: 18%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
header img {
  width: 100%;
  margin-bottom: 0;
}
header h1 {
  font-size: 1.1rem;
  color: #9ba31a;
  margin-top: 0;
}

main {
  width: 100%
}
main img {
  max-width: 100%;
}

footer {
  width: 100%;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  background-color: #9ba31a;
}
footer img {
  width: 60px;
  align-self: end;
}
@media (min-width: 281px) {
  header h1 {
    font-size: 1.4rem;
  }
}
@media (min-width: 801px) {
  body {
    justify-content: center;
    margin: 0;
    padding: 0;
  }
  header {
    flex-direction: row;
    justify-content: center;
    align-items: flex-end;
  }
  header h1 {
    margin-bottom: 20px;
  }

  main {
    width: 80vw;
    margin: 0 auto;
  }
  main img {
    max-width: 100%;
  }
  .grid-container {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: repeat(8, 1fr);
    grid-column-gap: 20px;
  }
  .item-1 { grid-area: 1 / 1 / 8 / 6; }
  .item-2 { grid-area: 1 / 6 / 3 / 8; }
  .item-3 { grid-area: 3 / 6 / 5 / 8; }
  .item-4 { grid-area: 5 / 6 / 7 / 8; }
  .item-5 { grid-area: 7 / 6 / 9 / 8; }
  .item-6 { grid-area: 7 / 2 / 9 / 4; }
  .item-7 { grid-area: 7 / 4 / 9 / 6; }

  footer {
    min-height: 150px;
  }
  footer a {
    font-size: 1.8rem;
  }
  footer img {
    width: 100px;
  }
}