header.masthead {
  background-position: bottom center;
  background-repeat: no-repeat;
  background-size: cover;
  width: 100%;
  min-height: 70vh;
}

#site-subtitle {
  display: none;
}

@media (min-width: 992px) {
  #site-subtitle {
    display: block;
  }
}

main {
  max-width: 900px;
  padding: 1rem;
}

h1 {
  font-weight: bold;
}

footer {
  height: 4rem;
  background: var(--bs-dark);
}