body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

nav {
    background-color: #333;
    color: #fff;
    display: flex;
    justify-content: space-between;
    padding: 10px 20px;
}

nav div {
    font-size: 1.5em;
}

nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: 20px;
}

nav ul li button {
    background-color: #444;
    border: none;
    color: #fff;
    padding: 10px 15px;
    cursor: pointer;
}

nav ul li button:hover {
    background-color: #555;
}

.container {
    display: flex;
    height: calc(100vh - 60px);
}

.tables-fields-container {
    display: flex;
}

.sidebar {
    background-color: #f4f4f4;
    padding: 20px;
    width: 600px;
    overflow-y: auto;
}

.card {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    padding: 20px;
}

.main-content {
    flex-grow: 1;
    padding: 20px;
}

.result-frame {
    border: 1px solid #ddd;
    border-radius: 5px;
}

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

li {
    padding: 10px;
    border: 1px solid #ddd;
    margin-bottom: 5px;
    cursor: pointer;
}

li:hover {
    background-color: #eee;
}

.selected-fields {
    margin-bottom: 20px;
    border: 1px solid #ddd;
    padding: 10px;
    min-height: 100px;
    background-color: #f9f9f9;
}

.selected-fields .field-item {
    margin: 5px;
    padding: 5px;
    background-color: #e0e0e0;
    border-radius: 3px;
    display: inline-block;
}

.result-frame-container {
    height: 100%;
}