.sp500-result {
    background-color: #f0f8ff;
    padding: 15px;
    border-radius: 5px;
}
#sp500-form label {
    display: block;
    margin-top: 10px;
}
#sp500-form input[type="number"] {
    width: 100%;
    padding: 5px;
    margin-top: 5px;
}