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

.container {
    text-align: center;
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #333;
    margin-bottom: 2rem;
}

.timer-display {
    font-size: 4rem;
    font-weight: bold;
    color: #444;
    margin: 2rem 0;
}

.timer-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

button {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

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