body {
  max-width: 600px;
  margin: 60px auto;
  padding: 0 20px;
  font-family: sans-serif;
  color: #111;
}

h1 { font-size: 24px; }
h2 { font-size: 18px; margin-top: 24px; }
h3 { font-size: 15px; margin-top: 20px; }

.sub { color: #555; font-size: 14px; }

p { line-height: 1.7; font-size: 15px; }

ul { font-size: 15px; line-height: 1.9; }

hr { border: none; border-top: 1px solid #ddd; margin: 24px 0; }

a { color: #16a34a; }