.grid-container {
  margin: 1em;
  height: 96vh;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  grid-template-rows: 1fr 1fr;
  grid-template-areas:
    "list entry tree"
    "list entry tree";
  gap: 1em;
}

#entry-list {
  grid-area: list;
}

#entry {
  grid-area: entry;
}

#file-tree {
  grid-area: tree;
}