adsk-forge-LevelSectionPanel-step14~16

// Step 14 inside the class of the LevelSectionPanel
onToolbarCreated() {
    this.viewer.removeEventListener(
        Autodesk.Viewing.TOOLBAR_CREATED_EVENT,
        this.onToolbarCreated
    );

    this.createUI();
}

// Step 15 Outside the class of the LevelSectionPanel
Autodesk.Viewing.theExtensionManager.registerExtension(
    'Autodesk.ADN.LevelSection',
    LevelSectionPanelExtension
);


// Step 16 inside panel.css
.adn-docking-panel {
    top: 10px;
    left: 10px;
}

.adn-lvl-section-panel .docking-panel-scroll {
    width: 370px;
    height: 112px;
    min-width: 370px;
    max-height: 112px;
}

.adn-lvl-section-panel .docking-panel-scroll table {
    width: 100%;
    height: 100%;
}

/* ... */

.adn-lvl-section-panel table td:first-child {
    width: 30px;
    color: #f3f7fb;
}

.adn-lvl-section-panel table td:last-child {
    color: #bec8d2;
}

.adn-lvl-section-panel table tr:last-child {
    text-align: center;
}

.adn-lvl-section-panel table tr:last-child button {
    width: calc(100% - 50px);
    height: 30px;
}

.adn-lvl-selector {
    width: 100%;
    height: 25px;
}