Add css part

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@tp/tp-tabs",
-  "version": "1.0.0",
+  "version": "1.2.0",
   "description": "",
   "main": "tp-tabs.js",
   "scripts": {
@@ -13,7 +13,7 @@
   "author": "trading_peter",
   "license": "Apache-2.0",
   "dependencies": {
-    "lit": "^2.2.0",
-    "@tp/helpers": "^1.0.0"
+    "lit": "^2.8.0",
+    "@tp/helpers": "^2.1.0"
   }
 }

tp-tabs.js

@@ -5,31 +5,37 @@ This program is available under Apache License Version 2.0
 */
 
 import { closest } from '@tp/helpers';
-import { LitElement, html, css } from 'lit-element';
+import { LitElement, html, css } from 'lit';
 
 class TpTabs extends LitElement {
-  static get properties() {
-    return {
-      orientation: { type: String, reflect: true }
-    };
-  }
-
   static get styles() {
     return css`
+      :host {
+        display: block;
+      }
+
       :host([orientation="vertical"]) .tabs {
         flex-direction: column;
       }
+
       .tabs {
         display: flex;
         flex-direction: row;
       }
-      .tab {
+
+      slot::slotted(.tab) {
         cursor: pointer;
         padding: 8px;
       }
     `;
   }
 
+  static get properties() {
+    return {
+      orientation: { type: String, reflect: true }
+    };
+  }
+
   constructor() {
     super();
     this.orientation = 'horizontal';