body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    text-align: center;
    margin-top: 40px;
}

input {
    padding: 10px;
    font-size: 16px;
    width: 200px;
}

button {
    padding: 10px 15px;
    font-size: 16px;
    margin-left: 5px;
    cursor: pointer;
}

ul {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}

li {
    background-color: #ffffff;
    margin: 5px;
    padding: 10px;
    width: 260px;
    border-radius: 4px;
}