body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  color: #333;
  margin: 0;
  padding: 0;
}
main.main-content {
  max-width: 980px;
  padding: 20px;
  margin: 0 auto;
  text-align: center;
}

h1 {
  font-size: 22px;
  font-weight: 500;
}
h2 {
  font-size: 42px;
  color: #368324;
  font-weight: 700;
}
h3 {
  font-size: 24px;
}