.button {
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
}

.rounded {
  border-radius: 8px;
}

.green {
  background-color: #4CAF50;
  border: none;
  color: white;
}

.blue {
  background-color: #008CBA;
  border: none;
  color: white;
}

.red {
  background-color: #f44336;
  border: none;
  color: white;
}

.gray {
  background-color: #e7e7e7; 
  border: none;
  color: black;
}

.black {
  background-color: #555555;
  border: none;
  color: white;
}