.btn {
  background-color: #4CAF50; /* Green */
  border: none;
  color: white !important;
  padding: 0.5em;
  text-align: center;
  text-decoration: none !important;
  display: inline-block;
  margin-bottom: 0.5em;
}

.btn:hover {
  background-color: #C3C3C3; /* Green */
}