* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #ffffff;
  color: #222222;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue",
    "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.7;
}

a {
  color: #0645ad;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px 56px;
}

h1,
h2,
h3 {
  margin: 0 0 16px;
  line-height: 1.4;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.35rem;
}

p,
li {
  margin: 0 0 10px;
}

ul {
  margin: 0;
  padding-left: 20px;
}

.back-link {
  margin: 0 0 24px;
}

.back-link a {
  text-decoration: none;
}

.app-section {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid #dddddd;
}

.url,
.note {
  color: #666666;
}

code {
  padding: 1px 4px;
  border: 1px solid #dddddd;
  background: #f7f7f7;
  font-family: "SFMono-Regular", "Menlo", "Consolas", monospace;
}