fix(core): update

ts_web/elements/lele-element.ts

@@ -0,0 +1,35 @@
+import { LitElement, property, html, customElement } from 'lit-element';
+import { TemplateResult } from 'lit-html';
+
+@customElement('lele-element')
+export class LeleElement extends LitElement {
+  @property()
+  public footerText = `Lossless GmbH - 2018`;
+
+  constructor() {
+    super();
+
+    // you have access to all kinds of things through this.
+    // this.setAttribute('gotIt','true');
+    
+  }
+
+  public render(): TemplateResult {
+    return html`
+      <style>
+        @import url('https://fonts.googleapis.com/css?family=Roboto');
+        :host {
+          font-family: 'Roboto', sans-serif;
+          background: #FCFCFC;
+          box-shadow: 0px 0px 5px rgba(0,0,0,0.6);
+          display: block;
+          box-sizing: border-box;
+        }
+        :host([hidden]) {
+          display: none;
+        }
+      </style>
+      <slot></slot>
+    `;
+  }
+}