body {
  font-family: Arial, sans-serif;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  background-color: #007BFF;
  color: white;
}

.logo {
  height: 50px;
}

nav ul {
  list-style-type: none;
  display: flex;
  gap: 15px;
}

nav ul li a {
  color: white;
  text-decoration: none;
}

section {
  padding: 20px;
}

.simulator-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.classroom-image img {
  width: 100%;
  max-width: 600px;
}