body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.container {
  text-align: center;
}
button {
  margin: 10px;
  padding: 15px 25px;
  font-size: 16px;
  cursor: pointer;
}