body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

#data-container {
    min-height: 200px;
    border: 1px solid #ddd;
    padding: 15px;
    margin: 20px 0;
    border-radius: 4px;
    background-color: #fafafa;
}

#data-container ul {
    list-style-type: none;
    padding: 0;
}

#data-container li {
    padding: 10px;
    border-bottom: 1px solid #eee;
}

#data-container li:last-child {
    border-bottom: none;
}

.connection-success {
    color: #155724;
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    padding: 15px;
    border-radius: 4px;
}

.connection-error {
    color: #721c24;
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    padding: 15px;
    border-radius: 4px;
}

.connection-success h3, .connection-error h3 {
    margin-top: 0;
}

.connection-success ul {
    margin: 10px 0;
    padding-left: 20px;
}

.connection-success li {
    list-style-type: disc;
}

button {
    display: block;
    margin: 0 auto;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #0056b3;
}