body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    padding: 20px;
}

h1 {
    color: #333;
}

.controls {
    margin-bottom: 15px;
}

input {
    padding: 8px;
    width: 200px;
}

button {
    padding: 8px 12px;
    margin-left: 5px;
    cursor: pointer;
}

ul {
    background: #fff;
    padding: 15px;
    border-radius: 5px;
}

li {
    padding: 5px 0;
}