.auth-card {
  width: 300px;
  margin: 100px auto;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px #aaa;
  text-align: center;
  font-family: sans-serif;
}
button {
  padding: 10px 20px;
  cursor: pointer;
  border-radius: 6px;
}