body {
  font-family: sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
}
#card {
  padding: 1rem;
}
.controls {
  margin-top: 1rem;
}
.attribution {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2rem;
}