body {
  font-family: sans-serif;
  margin: 0;
}

header {
  background-color: #f0f0f0;
  padding: 1rem;
  text-align: center;
}

main {
  padding: 1rem;
}

.student-info {
  margin-bottom: 2rem;
}

.courses {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

.course {
  border: 1px solid #ccc;
  padding: 1rem;
  border-radius: 5px;
}