<style>
    body {
        font-family: Arial, sans-serif;
        margin: 20px;
        padding: 0;
        background-color: #f4f4f4;
    }
    h1 {
        color: #333;
    }
    ul {
        list-style-type: none;
        padding: 0;
    }
    li {
        background: #fff;
        margin: 10px 0;
        padding: 10px;
        border-radius: 5px;
        display: flex;
        justify-content: space-between;
    }
    button {
        margin-left: 5px;
        cursor: pointer;
        background-color: #007bff;
        color: white;
        border: none;
        border-radius: 5px;
        padding: 5px 10px;
    }
    button:hover {
        background-color: #0056b3;
    }
    input {
        padding: 5px;
        margin-top: 10px;
        border-radius: 5px;
        border: 1px solid #ccc;
        width: 200px;
    }
</style>
