body {
  margin: 0;
  background: #f3f5f7;
  color: #20252b;
  font: 18px/1.6 system-ui, sans-serif;
}
main {
  max-width: 760px;
  margin: 12vh auto;
  padding: 32px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0,0,0,.08);
}
a {
  color: #1769aa;
}