body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

header {
    background-color: #004d99;
    color: white;
    padding: 20px;
    text-align: center;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-content h1 {
    margin: 0;
    font-size: 36px;
}

#clock {
    font-size: 24px;
}

main {
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.queue-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    width: 100%;
    max-width: 1200px;
}

.queue-desk {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.queue-desk h2 {
    margin: 0;
    font-size: 24px;
}

.queue-desk p {
    font-size: 22px;
    margin: 10px 0;
}

.queue-desk span {
    font-weight: bold;
    font-size: 28px;
    color: #004d99;
}