body {
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
  margin-top: 0;
  background-color: white;
}

.sub-header {
  display: grid;
  background-color: var(--sub-header);
  padding: 1rem;
  grid-auto-flow: column;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  grid-gap: 0.5rem;
}

#back-button,
#sub-header p,
#prev-trip-arrow,
#next-trip-arrow{
  color: white;
  font-size: large;
  border: none;
}

#prev-trip-arrow{
  padding-right: 1rem;
}

#back-button:hover {
  color: var(--back-btn-hover);
}