html,
body {
  text-align: center;
}

html {
  font-size: 10px;
}

body {
  font-size: 1.6rem;
}

main {
  background: #eee;
  max-width: 768px;
  margin: auto;
  padding: 1rem;
  border-radius: 1rem;
}

footer {
  text-align: left;
  display: flex;
  justify-content: center;
}

footer dl {
  margin: 1rem;
}

.pie {
  width: 100%;
  height: 240px;
}