body {
  font-family: Arial, sans-serif;
  margin: 20px;
  background: #f8f8f8;
}

h1 {
  color: #1e1e1e;
}

section {
  background: white;
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 5px;
  box-shadow: 0 0 5px #ccc;
}

button {
  padding: 10px 15px;
  font-size: 14px;
  cursor: pointer;
}