body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #2c3e50;
    color: #ecf0f1;
    font-family: Arial, sans-serif;
}

#timer-container {
    text-align: center;
}

#timer-display {
    font-size: 10em;
    margin-bottom: 20px;
}

#timer-controls button {
    font-size: 1.5em;
    margin: 0 10px;
    padding: 10px 20px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: #3498db;
    color: white;
}