body {
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

#timer-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

#timer {
    font-size: 3em;
    margin-bottom: 20px;
    color: #333;
}

#buttons-container {
    display: flex;
}

button {
    background-color: #4caf50;
    color: #fff;
    font-size: 1.5em;
    padding: 10px 20px;
    margin: 0 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}