body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.container {
    background-color: #f4f4f4;
    padding: 20px;
    border-radius: 5px;
}

h1 {
    color: #2c3e50;
    text-align: center;
}

h2 {
    color: #2980b9;
}

.ecosystem-image {
    width: 100%;
    height: auto;
    margin-bottom: 20px;
}

.rules ul {
    padding-left: 20px;
}

.simulation {
    margin-top: 20px;
    text-align: center;
}

#ecosystemCanvas {
    border: 1px solid #333;
}

.footer {
    margin-top: 20px;
    font-style: italic;
    text-align: center;
}