body {
  margin: 0;
  background: #ffcc00;
  color: #1c2978;
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main {
  max-width: 680px;
  margin: 24px auto;
  padding: 24px 20px;
  background: #fff;
  border-radius: 20px;
}
header { text-align: center; }
header img { width: 96px; height: 96px; border-radius: 22px; }
h1 { margin: 8px 0 0; font-size: 28px; }
h2 { margin-top: 28px; font-size: 20px; }
a { color: #1c2978; font-weight: 600; }
nav { text-align: center; margin-top: 8px; }
nav a { margin: 0 8px; }
footer { text-align: center; font-size: 14px; margin: 16px; }
hr { border: 0; border-top: 1px solid #e4e4e4; margin: 32px 0; }