body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
}

.panel {
    background: #fff;
    max-width: 400px;
    margin: 40px auto;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px #ccc;
}

h1, h2 {
    text-align: center;
    color: #333;
}

#user-list {
    margin-bottom: 20px;
}

.user {
    background: #e9ecef;
    padding: 10px;
    margin-bottom: 8px;
    border-radius: 4px;
}

form input {
    display: block;
    width: 94%;
    margin: 8px auto;
    padding: 8px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

form button {
    display: block;
    width: 100%;
    padding: 10px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

form button:hover {
    background: #0056b3;
}