html, body, h1, h3, h5, p {
  margin: 0;
  padding: 0;
}

body {
  font-family: '-apple-system', BlinkMacSystemFont, 'Helvetica Neue', Helvetica, Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

header {
  padding: 14px 0;
}

main {
  margin-top: 16px;
  padding: 0 12px;
}

footer {
  margin-top: 50px;
  font-size: 18px;
  text-align: center;
}

.red {
  color: #c00000;
}

.text-center {
  text-align: center;
}

.title {
  font-size: 30px;
}

.subtitle {
  margin-bottom: 10px;
  font-size: 20px;
}