body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}

h1, h2 {
    color: #333;
}

label {
    font-size: 1.2em;
    color: #333;
}

select {
    padding: 10px;
    font-size: 1em;
    margin-top: 10px;
}

#featuresList {
    margin-top: 20px;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    background: #fff;
    padding: 10px;
    margin-bottom: 5px;
    border-radius: 4px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

#downloadButton {
    display: inline-block;
    padding: 10px 20px;
    font-size: 1em;
    margin-top: 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#downloadButton:hover {
    background-color: #45a049;
}