addressbook_web/frontend/style.css

body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

.folder-controls, .connection-controls {
    margin-bottom: 20px;
    padding: 10px;
    border: 1px solid #ccc;
}

input, select, button {
    margin: 5px;
    padding: 5px;
}