body {
  font-family: 'Indie Flower', cursive;
  font-size: 1.2rem;

  max-width: 60rem;
  margin: auto;
  padding: 0.5em;
}

body ::selection {
  background: #ffb7b7;
}

p {
  margin-bottom: 0;
}

main {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1em;

  margin-top: 1em;
  margin-bottom: 1em;
}

@media (max-width: 50rem) {
  main {
    flex-direction: column;
  }
}

.calculator-section {
  display: flex;
  flex-direction: column;
  text-align: center;
}

a {
  color: #337ab7;
  text-decoration: none;
}

span.number {
  font-size: 5rem;
  line-height: 5rem;
}

footer {
  ul {
    margin-top: 2rem;
    border-top: 1px solid #ddd;
    padding-top: 1rem;
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 1em;
    font-size: 1.2em;
  }
  li {
    list-style: none;
    padding: 0;
  }
}