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

.container {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    margin: auto;
}

input {
    width: 80%;
    padding: 8px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    background: #28a745;
    color: white;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin: 5px;
}

button:hover {
    background: #218838;
}

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

li {
    background: #e9ecef;
    margin: 5px 0;
    padding: 10px;
    border-radius: 5px;
}