body { padding: 0; margin: 0; font-family: sans-serif; font-size: 120%; }
body > header {
  background-color: var(--pico-primary-background);
  color: var(--pico-color);
  padding: 0.4em;
}
body > header > h1 {
  margin: 0;
  color: var(--pico-primary-inverse);
  text-align: center;
}
body > main {
  min-height: calc(100vh - 2rem);
}
body > main > form {
  padding: 1rem;
}