fix(core): update

ts/domtools.elementbasic.ts

@@ -2,7 +2,20 @@ import * as plugins from './domtools.plugins';
 import { DomTools } from './domtools.classes.domtools';
 import { scrollBarStyles } from './domtools.css.theme';
 
-import { html, LitElement } from 'lit-element';
+import { html, LitElement, css, unsafeCSS } from 'lit-element';
+
+export const staticStyles = css`
+  * {
+    transition: background 0.1s, color 0.1s;
+    box-sizing: border-box;
+  }
+
+  :host {
+    font-family: 'Roboto', sans-serif;
+  }
+
+  ${unsafeCSS(scrollBarStyles)}
+`;
 
 /**
  * styles to be included in every webcomponent