#age-calculator {
    max-width: 500px;
    margin: 20px auto;
    padding: 20px;
    background: #f7f7f7;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    text-align: center;
}

#age-calculator h2 {
    margin-bottom: 20px;
    color: #333;
}

#age-calculator label {
    display: block;
    margin-bottom: 10px;
    font-size: 1.1em;
    color: #555;
}

#age-calculator input[type="datetime-local"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
}

#age-calculator button {
    background: #0073aa;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
}

#age-calculator button:hover {
    background: #005177;
}

#age-result {
    margin-top: 20px;
    font-size: 1.2em;
    color: #333;
}

/* Responsive design */
@media (max-width: 600px) {
    #age-calculator {
        padding: 15px;
    }
}