.container {
  display: grid;
  grid-template-rows: 100px 50px 50px 100px 100px 100px 400px 300px 100px 50px 75px;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 10px 0px;
}
  
header {
  grid-row-start: 1;
  grid-row-end: 3;
  grid-column-start: 1;
  grid-column-end: 9;
}

nav {
  grid-row-start: 3;
  grid-row-end: 3;
  grid-column-start: 1;
  grid-column-end: 9;
}

.side-bar {
  grid-row-start: 4;
  grid-row-end: 9;
  grid-column-start: 7;
  grid-column-end: 9;
}

main {
  grid-row-start: 4;
  grid-row-end: 9;
  grid-column-start: 1;
  grid-column-end: 7;
}

.bottom-bar {
  grid-row-start: 9;
  grid-row-end: 11;
  grid-column-start: 1;
  grid-column-end: 9;
}

footer {
  grid-row-start: 11;
  grid-row-end: 12;
  grid-column-start: 1;
  grid-column-end: 9;
}