* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

h1, h2, h3 {
    margin-bottom: 10px;
}

#zoo-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.animal {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

@media screen and (max-width: 768px) {
    #zoo-container {
        grid-template-columns: 1fr;
    }
}