body {
  font-family: Arial;
  background: #f0f8ff;
  text-align: center;
}

h1 {
  color: #ff6b6b;
}

button {
  padding: 15px;
  font-size: 18px;
  background: #4ecdc4;
  border: none;
  border-radius: 10px;
  margin: 10px;
}

.modules a {
  display: block;
  margin: 10px;
  padding: 20px;
  background: #ffe66d;
  border-radius: 15px;
  text-decoration: none;
  font-size: 20px;
}