.age-calculator {
    width: 90%;
    max-width: 500px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

form {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 10px;
}

input[type="date"] {
    width: 100%;
    padding: 10px;
    font-size: 16px;
}

button {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    background-color: #4CAF50;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.result {
    margin-top: 20px;
}

.result p {
    font-size: 18px;
    margin-bottom: 10px;
}

@media only screen and (max-width: 768px) {
    .age-calculator {
        width: 95%;
        margin: 10px auto;
        padding: 15px;
    }
    input[type="date"] {
        padding: 8px;
        font-size: 14px;
    }
    button {
        padding: 8px;
        font-size: 14px;
    }
    .result p {
        font-size: 16px;
    }
}

@media only screen and (max-width: 480px) {
    .age-calculator {
        width: 100%;
        margin: 5px auto;
        padding: 10px;
    }
    input[type="date"] {
        padding: 6px;
        font-size: 12px;
    }
    button {
        padding: 6px;
        font-size: 12px;
    }
    .result p {
        font-size: 14px;
    }
}