body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #fafafa;
  color: #222;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

header {
  background: #ffffff;
  border-bottom: 1px solid #ddd;
}

nav a {
  margin-right: 15px;
  text-decoration: none;
  color: #333;
  font-weight: 500;
}

h1, h2 {
  color: #111;
}

.btn {
  display: inline-block;
  padding: 12px 20px;
  background: #d32f2f;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
}

footer {
  background: #f1f1f1;
  margin-top: 40px;
  padding: 20px 0;
  text-align: center;
  font-size: 14px;
}


section {
  margin-bottom: 40px;
}

ul li {
  margin-bottom: 8px;
}

header h1 {
  font-size: 28px;
}

h2 {
  margin-top: 30px;
  font-size: 22px;
}

button.btn:hover {
  opacity: 0.9;
  cursor: pointer;
}