body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f7f7f8;
  color: #202124;
}
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}
h1 { font-size: 36px; margin-bottom: 24px; }
h2 { margin-top: 32px; }
p { font-size: 17px; line-height: 1.7; }
a { color: #1a73e8; }
nav { margin-top: 36px; }