body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
}

.container {
    width: 80%;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
}

h1 {
    text-align: center;
    color: #333;
}

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

li {
    padding: 10px;
    background: #f9f9f9;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 3px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

a {
    text-decoration: none;
    color: #28a745;
    margin-right: 10px;
}

a:hover {
    text-decoration: underline;
}

button {
    background-color: #28a745;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 3px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #218838;
}

pre {
    background-color: #f4f4f9;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 3px;
    overflow: auto;
}