body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background-image: url('https://images.unsplash.com/photo-1501854140801-50d01698950b?q=80&w=2400&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    color: white;
}

.container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.5);
}

h1 {
    font-size: 3em;
    margin: 0;
}

h2 {
    font-size: 1.5em;
    margin: 0;
}

#river-level {
    font-size: 1em;
    margin-top: 20px;
}

#status p {
    font-size: 4em;
    margin: 0;
    font-weight: bold;
}

.passable {
    color: #4CAF50;
}

.impassable {
    color: #f44336;
}