body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #2c3e50;
  background-color: #fafbfd;
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

h1 {
  color: #1a3a6e;
}

h2 {
  color: #2980b9;
  border-bottom: 2px solid #3498db;
  padding-bottom: 0.3rem;
  margin-top: 2rem;
}

h3 {
  color: #16a085;
}

.card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  padding: 1.6rem;
  margin-bottom: 1.8rem;
}

.example {
  background-color: #f8fbff;
  padding: 1rem;
  border-left: 4px solid #3498db;
  margin: 1rem 0;
  border-radius: 0 4px 4px 0;
}

footer {
  text-align: center;
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid #eee;
  font-size: 0.9em;
  color: #7f8c8d;
}

.images {
  display: flex;
  flex-direction: column;
  align-items: center;
  /* Horizontally centers images */
  justify-content: center;
  /* Vertically centers if container has height */
  gap: 30px;
  margin: 40px 0;
}

.images img {
  max-width: 90%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.images figcaption {
  text-align: center;
  font-size: 1rem;
  color: #4a5568;
  margin-top: 8px;
}