body {
  text-align: center;
  padding: 1.5em;
  font-size: 1.25em;
  justify-content: space-between;
  align-items: center;
}

.textSubmitCombo {
  display: inline-flex;
  overflow: hidden;
  width: 20em;
  max-width: 100%;
}

.textSubmitCombo input[type="text"] {
  flex-grow: 1;
  flex-shrink: 1;
  width: 8em;
  border-radius: 0.5em 0 0 0.5em;
}

.textSubmitCombo button {
  flex-grow: 0;
  flex-shrink: 0;
  border-radius: 0 0.5em 0.5em 0;
}

header {
  grid-area: header;
}

section {
  grid-area: section;
}

footer {
  grid-area: footer;
}

header h1 {
  margin: 0;
}

@media (orientation: landscape) {
  body {
    display: grid;
    grid-gap: 1.5em;
    grid-template-areas:
      "header section"
      "footer footer";
    grid-template-columns: repeat(2, 1fr);
  }
}