html,
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 2em 1fr 1fr;
  gap: 1em;
  padding: 1em;
  box-sizing: border-box;
}

textarea {
  width: 100%;
  height: 100%;
}

select {
  grid-column-start: 1;
  grid-column-end: 3;
}