body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
}

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 1rem;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

main {
    flex: 1;
    padding: 2rem;
    text-align: center;
}

.section {
    margin-bottom: 2rem;
}

.timer {
    font-size: 3rem;
    font-weight: bold;
    color: #555;
    margin-top: 1rem;
    background: #fff;
    border: 1px solid #ddd;
    padding: 1rem;
    border-radius: 8px;
    display: inline-block;
}

.counters {
    display: flex;
    justify-content: space-around;
}

.counter {
    flex: 1;
    font-size: 2rem;
    font-weight: bold;
    color: #555;
    margin: 1rem;
    background: #fff;
    border: 1px solid #ddd;
    padding: 1rem;
    border-radius: 8px;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
}