.container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 1rem;
}
.header-about {
  text-align: center;
  margin-bottom: 5rem;
}
.header-about h1 {
  font-size: 3.5rem;
  color: #333;
  margin: 0.5rem 0;
}
.section {
  margin-bottom: 1.5rem;
}
.section h2 {
  font-size: 1.75rem;
  color: #444;
  margin-bottom: 0.5rem;
  border-bottom: 2px solid #4caf50;
  padding-bottom: 0.25rem;
}
.section p {
  font-size: 1rem;
  color: #555;
  line-height: 1.6;
}