body {
  font:
    17px/1.8 -apple-system,
    sans-serif;
  background: #f5f7f7;
  color: #20362b;
  max-width: 680px;
  margin: 12vh auto;
  padding: 24px;
}
main {
  background: white;
  border: 1px solid #dde7e1;
  border-radius: 20px;
  padding: 36px;
}
a {
  color: #16704c;
}