.age-calculator-container {
    max-width: 400px;
    margin: 20px auto;
    padding: 20px;
    background: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    font-family: Arial, sans-serif;
}

.age-calculator-container h3 {
    text-align: center;
    margin-bottom: 15px;
}

.age-calculator-container label {
    display: block;
    margin-top: 10px;
}

.age-calculator-container input {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    margin-bottom: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

#calculate-age {
    background: #28a745;
    color: #fff;
    padding: 10px;
    width: 100%;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
}

#calculate-age:hover {
    background: #218838;
}

#age-result {
    margin-top: 15px;
    font-weight: bold;
    text-align: center;
}

.age-output {
    color: #007bff;
}

.age-error {
    color: red;
}