body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
  color: #333;
}

header {
  background-color: #2b7a78;
  color: white;
  padding: 2rem;
  text-align: center;
}

header h1,
header p.tagline {
  color: white;
  margin: 0;
}

main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
}

section {
  margin-bottom: 2rem;
}

h1, h2 {
  color: #17252a;
}

footer {
  background-color: #def2f1;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: #555;
}

.button {
  display: inline-block;
  padding: 0.6rem 1rem;
  background-color: #3aafa9;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  margin-top: 1rem;
}