styles.css

body, html {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    height: 100%;
}

#app {
    display: flex;
    height: 100%;
}

#toolbox {
    width: 200px;
    background-color: #f0f0f0;
    padding: 10px;
    overflow-y: auto;
}

.toolbox-item {
    margin-bottom: 10px;
    padding: 10px;
    background-color: #fff;
    border: 1px solid #ddd;
    cursor: move;
    display: flex;
    align-items: center;
}

.toolbox-item i {
    margin-right: 10px;
}

#canvas {
    flex-grow: 1;
    position: relative;
    background-color: #fff;
    overflow: auto;
}

.node {
    position: absolute;
    width: 120px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: move;
    font-size: 12px;
    text-align: center;
    z-index: 10;
    background-color: #f8f8f8;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.node i {
    margin-right: 5px;
}

#properties {
    width: 250px;
    background-color: #f0f0f0;
    padding: 10px;
    overflow-y: auto;
}

#save-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
}

.jtk-connector {
    z-index: 5;
}

.jtk-endpoint {
    z-index: 6;
}

.jtk-overlay {
    z-index: 7;
}