​

button {

  background-color: #ffffff;

  color: #000;

  border: 2px solid #000;

  padding: 10px;

  margin: 5px;

  cursor: pointer;

  border-radius: 4px; /* Rounded corners */

}

​

button:hover {

  background-color: #e0e0e0; /* Slightly darker on hover for effect */

}

​

button:active {

  background-color: #c0c0c0; /* Even darker on active for effect */

}

​

.header {

  font-size: 24px;

  color: #000;

  margin: 20px 0;

  text-align: center;

}

​

.subheader {

  font-size: 16px;

  color: #000;

  margin-bottom: 20px;

  text-align: center;

}

​