body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f9f9f9;
  color: #333;
}

header {
  background: #4cafef;
  color: white;
  padding: 10px;
  text-align: center;
}

main {
  padding: 20px;
}

section {
  background: white;
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 8px;
}

button {
  background: #4cafef;
  color: white;
  border: none;
  padding: 10px 15px;
  margin-top: 10px;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background: #3b8edb;
}