body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: #f4f6f8;
  color: #2c3e50;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 900px;
  margin: 40px auto;
  background: #ffffff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

h1 {
  margin-bottom: 0;
}

.subtitle {
  color: #7f8c8d;
  margin-top: 5px;
  margin-bottom: 30px;
}

section {
  margin-bottom: 25px;
}

h2 {
  border-bottom: 2px solid #e0e0e0;
  padding-bottom: 5px;
}

footer {
  margin-top: 40px;
  font-size: 0.9em;
  color: #7f8c8d;
  text-align: center;
}