body {
  font-family: sans-serif;
  margin: 30px;
  background-color: #eef5ff;
}

h1 {
  text-align: center;
}

section {
  margin-bottom: 25px;
  padding: 20px;
  border: 2px solid #cccccc;
  border-radius: 10px;
  background-color: white;
}

button {
  padding: 10px 18px;
  font-size: 16px;
  background-color: #337ab7;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #23527c;
}