body {
    font-family: Arial, sans-serif;
    margin: 20px;
}
h1 {
    color: #007BFF;
}
form {
    margin-bottom: 20px;
}
input, button {
    padding: 10px;
    margin: 5px;
}
ul {
    list-style: none;
    padding: 0;
}
li {
    background-color: #f9f9f9;
    padding: 10px;
    margin: 5px 0;
    border: 1px solid #ddd;
}