#startButton {
    background-color: blue;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

#countdownDisplay {
    background-color: orange;
    padding: 10px;
    border-radius: 5px;
    margin-top: 20px;
}