* {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  margin: 0;
  padding: 1em;
  display: grid;
  height: 100%;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 2em) 1fr;
  grid-gap: 1em;
}

.title {
  text-align: center;
  font-size: 1.5em;
}

.title:first-child {
  grid-column: 1 / 3;
}

textarea {
  height: auto;
  flex: 1;
  font-family: monospace;
  grid-column: 1 / 5;
}

@media (max-width: 600px) {
  body {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(3, 1.5em) repeat(4, 2em) 1fr;
    row-gap: 0.5em;
  }

  textarea {
    grid-column: 1;
  }
}