.otto-feed-calculator {
    max-width: 500px;
    background: #f4fff6;
    border: 2px solid #2e7d32;
    padding: 20px;
    border-radius: 10px;
    font-family: Arial, sans-serif;
}

.otto-feed-calculator h2 {
    color: #2e7d32;
    text-align: center;
}

.otto-feed-calculator label {
    display: block;
    margin-top: 12px;
    font-weight: bold;
}

.otto-feed-calculator input,
.otto-feed-calculator select {
    width: 100%;
    padding: 8px;
    margin-top: 4px;
}

.otto-feed-calculator button {
    margin-top: 15px;
    padding: 10px;
    width: 100%;
    background: #2e7d32;
    color: #fff;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

.otto-feed-calculator button:hover {
    background: #256528;
}

#otto-feed-result {
    margin-top: 15px;
    background: #ffffff;
    padding: 10px;
    border-left: 4px solid #2e7d32;
}

.otto-whatsapp {
    display: block;
    text-align: center;
    margin-top: 15px;
    color: #fff;
    background: #25D366;
    padding: 10px;
    text-decoration: none;
    border-radius: 5px;
}