body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0 20px;
  background-color: #f9f9f9;
  color: #333;
  line-height: 1.5;
}

.navbar {
  background-color: #3ddc84;
  padding: 10px 0;
  margin-bottom: 20px;
}

.navbar ul {
  list-style-type: none;
  display: flex;
  justify-content: center;
  gap: 30px;
  margin: 0;
  padding: 0;
}

.navbar a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.navbar a:hover {
  color: #1a5936;
}

h1.title-main {
  font-family: 'Georgia', serif;
  font-size: 2.2rem;
  margin-bottom: 10px;
  text-align: center;
  color: #2a7a3a;
}

h2.title-secondary {
  font-family: 'Courier New', Courier, monospace;
  color: #3a9d44;
  border-bottom: 2px solid #3ddc84;
  padding-bottom: 5px;
  margin-top: 40px;
}

h3.title-tertiary {
  font-family: 'Trebuchet MS', Helvetica, sans-serif;
  color: #4caf50;
  margin-top: 30px;
}

.rounded-img {
  display: block;
  max-width: 300px;
  margin: 15px auto;
  border-radius: 15px;
  border: 1px solid #ccc;
}

ul, ol {
  max-width: 600px;
  margin: 10px auto 20px;
  padding-left: 20px;
}

footer {
  text-align: center;
  padding: 15px 0;
  font-size: 0.9rem;
  color: #666;
  border-top: 1px solid #ddd;
  margin-top: 40px;
}