body {
  font-family: Arial, sans-serif;
  margin: 20px;
  background-color: #f4f4f9;
}

h1 {
  text-align: center;
  color: #333;
  font-size: 2em;
}

.container {
  max-width: 800px;
  margin: auto;
  padding: 10px;
}

.student-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 30px;
}

.student-card {
  background-color: #fff;
  border: 1px solid #ddd;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.student-card p {
  margin: 10px 0;
  font-size: 1em;
}

button {
  display: block;
  margin: 20px auto;
  padding: 12px 24px;
  font-size: 16px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #45a049;
}