.container {
  font-family: sans-serif;
  background: white;
  padding: 30px;
  text-align: center;
  border-radius: 10px;
  box-shadow: 0 0 10px #aaa;
}

button {
  padding: 10px 20px;
  margin: 10px;
  font-size: 20px;
  cursor: pointer;
}