button {
  background-color: #259e4d;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #1d7e3e;
}

button:active {
  background-color: #1f8341;
}