.all-page {
  width: 1378px;
  margin: auto;
  display: grid;
  grid-template-columns: repeat(20, 1fr);
  gap: 5px 10px;
  margin-left: auto;
  margin-right: 0;
}

.center-grid {
  max-width: 1100px;
  margin: auto;
}

aside {
  grid-column: 17/21;
  grid-row: 2;
}

nav {
  grid-row: 2;
}

main {
  grid-row: 2;
}

aside .window-content {
  padding: 1rem;
}